There are tons of software testing tools available in the market, and with the plethora of choices it becomes difficult to zero in on the best tool for your project. The following list categorizes, ranks and grades the different software testing tools in the market. For each tool - important features, USP and download links are mentioned.
Following tool categories are covered in this list
- Test Management Tool
- Automated Testing Tools
- Load Testing Tools
- Defect Tracking Tools
- Mobile Testing Tools
- Cross-browser Testing Tools
- API Testing Tools
- Security Testing Tools
- CSS Validator Tool
Test Management Tool:
These tools help organize the end to end test Cycle
1) qTest:
qTest by QASymphony is a testing platform built for enterprise teams practicing Agile and DevOps. This platform has modern, browser based UI that facilitates all testing activities from test management, automation and reporting. qTest also has integrations with development tools like Jira Software, Jenkins, and GitHub for traceability.
Features:
- Real-time integration with Jira
- Seamless test automation scheduling and CI integrations
- Solid reporting and analytics
- Agile test management
- Exploratory and Session Based Testing
- Enterprise BDD
2) TestLink:
TestLink is a web-based test management tool which facilitates software quality assurance. The tool offers support for test cases, test plans, user management, as well as various types of reports and statistics.
Features:
- Easy export and import of test cases
- Integrates with many Defect management tools
- Easy method for assigning test cases to multiple users
Download link: http://testlink.org/
3) Practitest:
PractiTest is an end-to-end test management tool. A common meeting ground for all QA stakeholders, it enables full visibility into the testing process and a deeper broader understanding of testing results.
Features:
- A vast array of third-party integrations with common bug trackers, automation tools, and robust API for the rest.
- Fully customizable & flexible for the ever-changing needs of QA teams: customize fields, views, permissions, issue workflows and more
- Reuse tests and correlate results across different releases and products.
- Unique hierarchical filter trees - organize everything and find anything quickly.
- Never work twice - with anti-bug duplicates, permutations, step parameters and call to test
- Visualize data with advanced dashboards and reports
- Fast professional and methodological support
4) Zephyr:
Zephyr is the #1 selling testing tool, providing end-to-end solutions for agile teams of all sizes. Get the flexibility, visibility, and insights you need to release better software FASTER
Features:
- 1-click Integration with JIRA, Confluence, Jenkins, Bamboo, and more
- Cloud, Server, and Data Center Deployment Options
- Advanced Analytics and DevOps Dashboards
- No Annual Commitment Required
5) QMetry:
QMetry is an open source testing tool which is designed for agile testing and allows developers to build, manage, and deploy quality software faster. The tool reduces the release cycle times by bringing agility, higher productivity and better empowering capabilities into the entire testing cycle.
Features:
- Create & reuse modular test cases.
- Collaborate test cases with the help of JIRA Capture, HipChat, & Confluence.
- It supports gradual step by step evolution of the test cases.
- QMetry Wisdom helps to enhance real-time reporting & trending analytics
Download Link: http://www.qmetry.com/
6) Testrail:
TestRail is a modern day test management tool with full a JIRA add-on integration. It is the only tool that integrates with any JIRA version and edition, including JIRA Cloud. This is a helpful tool to manage, track and coordinate testing efforts.
Features:
- Manage, organize and track all testing efforts in a central place.
- Allows testing highly productive user interface.
- Easy drag & drop with Screenshot Support
- Test Report & Metrics Automation
Download Link: http://www.gurock.com/testrail/
7) Test Collab:
It is a web-based test management tool. The induction of macros helps the tester to set up its re-usable steps with a unique identifier which can repeatedly use without typing them.
Features:
- Single window for many operations
- Assign steps to multiple users
- It supports Steady communication with team members
Download Link: https://testcollab.com/downloads/
8) QAComplete
QA complete offers enterprise-level capabilities but, it's flexible enough to fit with any modern development methodologies like Agile and DevOps. This test management tool allows linking manual and automated tests to detects, requirement and tasks.
Features:
- It is possible to prioritize testing effort and identify high-risk issues
- SSL and Single Sign on for Enhanced Security.
- Determine test coverage and ensure tests exist for all requirements
- Schedule automated Test Runs
- Integrates with Jenkins, JIRA, Selenium, and 40+ tools.
- Set and monitor Service Level Agreements (SLA)
Download Link: https://smartbear.com/lp/qacomplete/try-qacomplete-free/
Automated Testing Tools
This category of tools helps automate functional and Regression Testing of your application under test.
9) Squish
Squish is the GUI Test Automation tool of choice for more than 3000 companies worldwide to automate the functional regression tests and system tests of their graphical user interface (GUIs) and Human Machine Interfaces (HMIs). The Squish GUI testing tool, a 100% cross-platform tool, features
- In-depth support for all major GUI technologies
- Full support for all desktop, mobile, web and embedded platforms
- Test script recording
- Powerful and reliable object identification and verifications (object-based and image based)
- No dependency on screenshots or visual appearance
- Powerful integrated development environment (IDE)
- A wide range of popular script languages for test scripting
- Full support for Behavior Driven Development (BDD)
- Full control via command line tools
- Integrations with Test Management and CI-Systems
10) Ranorex
Over 14,000 users worldwide accelerate testing with Ranorex Studio, an all-in-one tool for cross-platform test automation. Ranorex is easy for beginners with a codeless click-and-go interface, but powerful for automation experts with a full IDE.
Features include:
- Robust object identification for reliable tests and reduced maintenance
- Shareable object repository and reusable code modules
- Cross-browser testing
- Automates challenging interfaces like SAP, ERP, Delphi and legacy applications
- Run tests in parallel or distribute on a Selenium Grid
- Built-in reporting
Ranorex integrates with solutions for BDD, CI/CD, source control, test management, defect-tracking, and more for a complete test automation toolchain
11) Selenium:
Selenium is the most popular automated testing tool. It specifically designed to support Automation Testing of functional aspects of web based applications, wide range of platforms and browsers.
Features:
- It offers the support for parallel test execution that reduce the time taken in executing parallel tests.
- Selenium needs very lesser resources when compared to other testing tools.
- Test cases prepared using this testing tool can be executed on any OS
- It supports the many known programming languages like Java, Python, C#, Perl, PHP, and JavaScript.
Download Link: http://www.seleniumhq.org/download/
12) QTP:
Quick Test Professional (QTP) is an automated functional GUI testing tool which allows the automation of user actions on a web or client based computer application. It is widely used for functional regression test automation. It uses a scripting language to manipulate the objects and controls of the application under test.
Features:
- QTP allows beginner testers to learn this tool in the few minutes.
- The tool is very easy to understand. It presents a test case in a simple workflow to the tester.
- The tool allows complete validation of applications through a full complement of checkpoints
Download Link: https://saas.hpe.com/en-us/software/uft
13) Watir:
Waitr is an open-source cross-platform web application testing tool. It is most reliable and flexible automation tool of Ruby libraries for web browsers automation. This cross browser testing tool interacts with a browser just like human being so it clicks links, filling out forms and validating text.
Features:
- It's a free, so there is no costs to use the tool.
- This automated testing tool is supported by very active and growing community.
- It supports multiple browsers on different platforms.
- It is very powerful and lightweight tool.
Download Link: http://watir.com/guides/downloads/
14) Testim:
Testim is a modern day automated testing tool. It uses machine learning to speed the authoring, execution, and maintenance of automated tests. The tester can be analysis any test case in few minutes and execute them on multiple web and mobile platforms.
Features:
- Easily add annotations to find out what's wrong in the system.
- Quickly view and share easy-to-understand annotated screenshots using the bug tracker.
- Developers just need to click the automated bug test to reproduce in the browser automatically.
Download link: https://www.testim.io/
15) AppliTools:
Applitools is an automated testing tool which automatically validates the look and feels and user experience of the apps and sites. It is designed is such a way that it easily integrates with the existing tests instead of requiring to create a new test.
Features:
- Allows cross browser test in various devices
- Provide Interactive visual test reports to the user
- Robust user access management
- It is available as a cloud service or on premise
Download Link: https://applitools.com/users/register
16) Telerik studio:
Telerik Studio is a software testing tool to test web and desktop applications of all Windows OS. It is a useful tool to test functionality, load and the performance of the web and mobile apps. It also offers a plugin to check Cross-browsing issues.
Features:
- Test Automation for AJAX Applications
- Native in build Support for the Telerik UI Controls
- Testing HTML Popups and Browser Dialogs
- Support for JavaScript Invocation and Logging
- Allows Continuous Integration use the Build Server
Download Link: http://www.telerik.com/download/teststudio
17) TestComplete:
TestComplete is an automated test management tool which helps to increase efficiency and reduce the cost of the testing process. It's very easy-to-use interface helps QA teams to implement an automation solution in very less amount of time.
Features:
- Support for multiple scripting languages
- Allows to record robust automated tests without scripting knowledge
- It offers data-driven testing
- Allows user to create Customize plugins and extensions
Download Link: https://support.smartbear.com/downloads/testcomplete/
Load Testing Tools
These tools help performance/load test a site or application.
18) Webload:
WebLOAD is an excellent testing tool which offers many powerful scripting capabilities, that is helpful for testing complex scenarios. The tool supports hundreds of technologies from Selenium to mobile, enterprise application to web protocols. It is possible to generate load both in the cloud and on-premise using this tool.
Features:
- Building load test scenarios more easily and efficiently with WebLOAD
- It helps you identify performance bottlenecks in your system with more than 80 reports types and graphs.
- Performance Testing can run from the cloud by generating load from Amazon EC2.
Download Link: http://www.radview.com/webload-download/
19) Loadrunner:
It is a load testing tool for Windows and Linux, which allows testing the web application efficiently. It helpful testing tool to determining the performance and result of the web application under heavy load.
Features:
- It offers supports for various types of Apps
- This testing tool can work on several enterprise environments.
- All the Vusers can be controlled with just a single dashboard.
- The LoadRunner provide support for several types of protocols.
- The monitoring and analysis is very user-friendly and easy to grasp.
Download Link: https://saas.hpe.com/en-us/software/loadrunner/try-now
20) Wapt:
Wapt is a load, and stress testing tool works for all Windows. It provides an easy and cost-effective way to test all types of websites. It works with the same efficiency on secure HTTPS websites, dynamic content and RIA applications under data-driven mode. This testing tool also provides supports for RIA applications in the data-driven mode.
Features:
- Allows to include different types of users in a single test
- Provide most flexible load level definitions
- The tool uses a large number of advanced techniques to simulate real load conditions.
- WAPT supports testing of websites and applications secured by SSL
Download Link: https://www.loadtestingtool.com/download.shtml
21) LoadUI Pro:
LoadUI is an open source load testing tool that allows performing complex load tests by simply dragging the different components. It also allows to create and update test cases while it's executing which make it a worthy tool to use.
Features:
- Allows to create multiple performance strategies.
- Reuse of existing SoapUI Pro functional tests.
- Real-time feedback about load testing results.
- Simultaneous load test even in the complex scenarios.
Download Link: https://www.loadui.org/downloads/download-loadui-pro.html
22) Silk Performer:
Silk Performer is the cost-effective load testing tool to meet all the critical applications, performance expectations, and service-level requirements. It also supports cloud integration which means that it is easy to simulate massive loads without a need to invest in hardware setup.
Features:
- Quickly find the root cause of performance issues with in-depth analysis
- It can be used anywhere with unlimited scalability from the Cloud
- Authenticate real time user experience by transaction monitoring and performance tracking
Download Link: https://www.microfocus.com/products/silk-portfolio/silk-performer/trial/
23) Jmeter:
Apache JMeter is an open source load testing tool. It is a Java desktop application, designed to load test functional behavior and measure performance of websites. The tool was developed for the purpose of load testing web applications, but it is now expanded to other test functions.
Features:
- JMeter allows performing load and performance test for various server types.
- This load testing tool store its test plans in XML format which allows users to generate the test plan using a text editor.
- The tool can be used to perform automated and functional testing of the applications.
Download link: http://jmeter.apache.org/download_jmeter.cgi
24) Agileload:
AgileLoad is a load testing tool to enhance the performance of business critical applications. With the help of this load testing tool, it is easy to test the performance of all kind of web and mobile application.
Features:
- Full support of dynamic web and mobile technologies
- Excellent monitoring and comprehensive analysis diagnostics
- It provides support for creating customizable test reports
- Take the right decisions to improve the application performance rapidly
Download link: http://www.agileload.com/signup-download/getting-started-with-agileload
25) Loadfocus
LoadFocus is the best cloud testing tool for Load Testing and Performance Testing. It also offers cloud testing services like Website Speed Testing, Mobile Applications, APIs testing, and Mobile Emulation on different types of Mobile Devices.
Features:
- Cloud Load Test Website and RESTful APIs
- Load tests can run in the cloud or on secure servers
- Allows number of repeats to inspect application behavior
- It offers Website Speed Testing and Insight Analytics
Download link: https://loadfocus.com/
26) BlazeMeter:
BlazeMeter is a Load testing tool which ensures delivery of high-performance software to quickly run performance tests for mobile apps, website or API to check the performance at every stage of its development.
Features:
- It allows to test website and integrate multi-geo locations results into single report
- Retrieve site data from Google Analytics account and integrate them into a new test setup.
- Use VPN credentials to integrate a series of load servers into the private network.
Download Link: http://info.blazemeter.com/live-request-a-demo
27) LoadImpact:
Load Impact is the best cloud-based load testing system which widely used by enterprises all over the world to develop their websites, mobile applications, web-based apps, and APIs by performing all types of test.
Features:
- It simulates traffic exactly happen in real life. No hidden caching or unreal user behaviour.
- Generating load from 10 different locations simultaneously is possible.
- Allows to Record an HTTP session using a proxy recorder and allow to perform the same actions during the test.
Download Link: https://saucelabs.com/signup/trial
Defect Tracking Tools
This category of tools help in defect/bug management.
28) JIRA:
JIRA is a defect tracking tool which is used for defect/issue tracking as well as project management. This tool is not only used for recording, reporting but also integrated directly with code development environment.
Features:
- JIRA Query Language helps to create quick filters with a single click
- Possible to create custom workflows of any size which is helpful to build, test, and release software.
- Install plug-and-play add-ons from The Atlassian Marketplace to fit all types of cases.
Download Link: https://www.atlassian.com/software/jira/try
29) Mantishub:
Mantis is an open source defect tracking tool that provides a great balance between simplicity and power. The users can easily get started with this tool for managing their teammates and clients effectively.
Features:
- Improve workflow and efficiency of the organisation
- Support for internal issue tracking
- This tool allows Single-sign-on using Bitbucket and GitHub
- MantisHub has its own inbuilt time tracking feature which is helpful for effectively report on time spent on the specific issues.
Download Link: https://www.mantishub.com/signup/gold
30) FogBugz:
The FogBugz is a tracking tool which can be used to track the status of defects and changes in ongoing software projects, such as application development and deployment. It is specifically helpful for organizations to keep track of bugs for multiple projects.
Features:
- Fogbugz provide flexibility to find the information in no time.
- It provide support for Agile project management
- Notifications and emails keep team members updated about changes to the projects and cases
Download Link: https://www.fogcreek.com/fogbugz
31) Bugzilla:
Bugzilla is one of the best defect Tracking System. The tool allows individual or groups of developers to keep track of outstanding bugs in their system. It is the best open source software used in the market by small scale as well as large- scale organizations.
Features:
- Optimized database structure to enhance performance and scalability
- Advanced query tool that remembers customized searches of the user
- Editable user profiles and comprehensive email preferences
- Extension Mechanism for Highly Customizable Installations
Download Link: https://www.bugzilla.org/download/
32) BugNet:
BugNet is open source Bug Finding Tool. It is a cross-platform application that is written using an ASP.NET platform, and it needs MySQL database as backend tool. The main objective of this defect tracking tool is to make codebase simple and easy to deploy.
Features:
- It is open source web base application under GPL license
- BugNET tool makes it simple to file, manage and report bugs
- The tool support multiple databases
- Offer an easy navigation and easy administration
Download Link: https://bugnet.codeplex.com/releases
33) Bug Genie:
It is an open source, web-based bug tracking software. Its main functionality includes issue tracking, bug reporting, and project management. It also includes a feedback publishing system.
Features:
- Easy and efficient source code management
- Helpful for Interactive project planning
- It offers Powerful command line tools
- Provide support for Incoming and outgoing email
Download Link: http://www.thebuggenie.com/
34) RedMine:
Redmine is another important defect tracing tool. The basic version of this tool is open-source and it can work on any machine that supports Ruby. It takes more time for installation, but once installed it runs smoothly.
Features:
- Issue creation via e-mail
- Offers support for multiple databases
- Flexible issue tracking system
- Flexible role based access control
Download Link: http://www.redmine.org/
Mobile Testing Tools
These tools help to automate testing of your Android or iOS applications.
35) Appium:
Appium is an open source test automation tool for mobile applications. It allows users to test all kind of native, mobile, web, and hybrid apps. It also supports the automated tests on emulators and simulators.
Features:
- Test the same application which is going to the marketplace.
- It is a simple application which needs a very little memory of for test process.
- Testing Native apps do not need SDK, it offers standard automation APIs which can be used on for all types of platforms.
Download Link: http://appium.io/
36) Espresso:
Espresso is a mobile testing tool for the enterprises. As an open-source tool, it's very easy to use, and it can extend within that working environment. This test recorder tool allows creating UI tests for the mobile app without writing a single line of the test code.
Features:
- Espresso Workflow Is Simple to Use
- Less Mobile Testing Flakiness
- Fast and consistent feedback to developers
- Developing Espresso test automation is quite easy.
Download link: https://developer.android.com/training/testing/espresso/
37) Perfecto:
Perfecto is a SaaS platform that allows app developers to perform web, mobile & IoT software testing. This tool also allows customers to select the deployment options that are best for the specific project.
Features:
- Cloud base mobile application testing
- It provides support for Agile Environment
- The tool can integrate with other testing tools like Selenium and Appium
Download link: https://www.perfectomobile.com/offer/begin-your-free-trial
38) ExperiTest:
Experitest is a quality assurance tools for mobile developers. The tool includes Manual Testing, Performance Testing, and load testing for mobile applications. This testing tool supports all mobile OS, iOS, Android, Windows Phone, and Blackberry.
Features:
- Create and execute automated tests on simulators or emulators hosted in Experitest data centers
- Record and play tests, and automatically recorded test to code and use the same test script for different mobile OS.
- It offers reports with video or Screen HTML-based reporting
- View mobile apps element structure and generate identifiers with ease
Download Link: https://experitest.com
39) Robotium:
Robotium is an open-source test automation tool mainly use for Android UI testing. It supports both native and hybrid applications. It is possible to perform System Testing, functional testing, and user acceptance testing over Android-based apps with the help of this tool.
Features:
- Record Android UI test cases in minutes
- Provide support to records from emulators and actual devices
- Automatically detects resource ID:s
- Complete support for native and hybrid Android apps
Downloadlink: https://robotium.com/pages/free-trial
Cross-browser Testing Tools
This category of tool help in Cross Browser Testing of your site across Chrome, Firefox, IE, Edge, Safari, and other browsers.
40) Browsera:
This is one of the best browser compatibility testing software which allows testing website and its elements in multiple browsers. This tool also used to test website and all web pages for scripting and layout errors.
Features:
- Browsera can quickly detect cross-browser layout problems automatically by comparing each browser's output.
- JavaScript errors from every browser are collected and reported after the every test.
- With its site crawling feature, it's easy to test all the web pages of the single site.
Download Link: http://www.browsera.com/web_sites
41) CrossBrowser Testing:
Cross-browser testing helps to ensure that website or web application functions correctly in various web browsers. With the help of this tool, it is possible to run parallel automated tests, compare screenshots, and remotely debug real desktop and mobile browsers.
Features:
- Run Numerous Tests on Multiple Devices At One Time
- Easily run automated tests against real iOS, Androids, & other desktop browsers
- It allows running testing frameworks like WebDriver.IO, and Nightwatch for superior quality and speed
Download link: https://crossbrowsertesting.com/freetrial
42) SauceLabs:
Sauce Labs is a Selenium cloud-based solution that supports automated cross-browser testing. It can perform testing in any OS and platform and browser combination.
Features:
- It is possible to test the web and mobile apps with the highest number of platforms, browsers, and OS combinations.
- The tool ensures web applications work efficiently with all the latest Android and iOS mobile devices.
- Run JavaScript unit tests for web apps to make sure that code works in every environment.
Download Link: https://saucelabs.com/signup/trial
43) Ghostlab:
Ghostlab is a Mac based testing app that allows test out responsive design across a variety of devices and browsers. It is a tool for synchronized browser testing. It synchronizes scrolls, clicks, reloads and form input across all connected clients to test a full user experience.
Features:
- No setup required for installation
- This mobile testing tool can Synchronised clicks, events and scrolls
- It provides support for remote debugging for all types of browser
Download Link: https://saucelabs.com/signup/trial
44) Browsershots:
Browsershots is a cross-browser testing tool allows testing website which is running on Windows, MacOS, Android or iOS. It provides screenshots of a website across 200+ browsers. This tool provides screenshots of websites in a testing environment which is helpful for finding all the major HTML or CSS faults.
Features:
- Browsershots is a completely free tool, and it provides support for 200 different browser versions to capture screenshots
- Browsers supported range from Arora, Chrome, Dillo, Firefox, Iceweasel, Konqueror, Links, SeaMonkey, and Safari.
- It allows to disable JavaScript, Change Color Depth, and disable/enable Java and Flash.
Download link: http://browsershots.org/
API Testing Tools
These tools help in testing REST/SOAP protocols
45) SoapUI:
SoapUI is a cross-platform free open source functional testing tool for SOAP and REST, written use the Java language. It is primarily used to perform functional and load testing on API.
Features:
- The GUI of the software is easy to handle and use
- Vulnerability testing feature helps to secure website from hackers and viruses.
- It is possible to do the detailed analysis using its reporting feature.
- SQL Injection feature provide some standard SQL queries and methods to identify the weak areas of the application.
Download Link: https://www.soapui.org/downloads/download-soapui-pro-trial.html
46) SOAPSonar:
SOAPSonar is an Api Testing tool which focuses on reducing the time and complexity to develop and maintain test cases. It supports testing every individual service independently of the client application and yet groups the test workflow for automation. Moreover, the creation and execution of these test cases require no programming or scripting skills.
Features:
- SOAP, XML, and REST service validation
- Functional Testing with Success Rule Framework
- Performance Profiling and Concurrent Client Load Testing
- Web Service Security Testing with Risk Mediation
Download Link: http://www.crosschecknet.com/products/soapsonar.php
47) WebInject:
WebInject is the best Api Testing tool for automated testing of web applications and web services. It can also test individual system components which have HTTP interfaces and can be used to perform automated functional, regression and acceptance tests.
Features:
- HTTP response times can be monitored in real-time at the time of test execution.
- Combine mobile and desktop GUI tests with web testing
- Timer statistics are calculated and displayed during the runtime.
Downloadlink: http://www.webinject.org/download.html
48) Tricentis:
Tricentis is an Api Testing tool which helps to manage test cases reduces testing time, manual effort and costs by building up and executing test cases.
Features:
- It offers Autonomous SAP Testing
- Mature, Robust SAP Test Automation Capabilities
- Solution Manager Integration
Download link: https://www.tricentis.com/automated-software-testing-tool-trial/
Security Testing Tools
These tools detect security vulnerabilities in your Application Under Test.
49) NetSparker:
NetSparker is a security testing tool which automatically scans websites, web applications and web services for vulnerabilities. It is the only scanner that automatically identified and verifies vulnerabilities with a proof of concept.
Features:
- Affordable and Maintenance Free Web Application Security Solution
- It is fully Configurable Online Web Vulnerability Scanner
- This security testing tool easily Integrate Web Security Scanning In SDLC
- It supports Enterprise Level Collaboration
Download Link: http://browsershots.org/
50) OWASP:
The Open Web Application Security Project is known as OWASP is a tool that helps organizations to develop, purchase, and maintain web and software which are reliable and trusted.
Features:
- Verify for Security Early and Often
- Validate all types of Inputs
- Implement Identity and Authentication Controls
- Implement all the appropriate Access Controls
Download Link: https://github.com/zaproxy/zaproxy/wiki/Downloads
51) Acunetix Vulnerability Scanner:
Acunetix Web Vulnerability Scanner is the leading security testing tool. It can find various types of security vulnerabilities than any other scanners and displays the fewest number of false positives.
Features:
- Most advanced Cross site scripting testing and in-depth SQL injection
- Comprehensive scanning of Single Page Applications and JavaScript-based websites
- Detection of Blind XSS vulnerabilities
- Automated detection of DOM-based XSS vulnerabilities
Download Link: https://www.acunetix.com/vulnerability-scanner/download/
CSS Validator Tool
52) W3C CSS validator:
It is a free software developed by the W3C to help Web designers and Web developers to check their CSS. With the help of this validation tool. It also helps users to find errors or incorrect uses of CSS.
Features:
- W3C CSS validator recognize many browser extensions and prefixes
- It includes an integrated web browser. Therefore, websites can be browsed and checked at the same time.
- It checks for and alerts accessibility issues to prevent people from using that page.
Download Link: https://jigsaw.w3.org/css-validator/DOWNLOAD.html
