Description: Focus on creating solid test suites, automate the generation of mock objects, and improve the unit testing workflow. Automock optimizes the unit testing process within dependency injection frameworks by providing a virtual, isolated environment and automated mock generation, enabling developers to create efficient test suites and enhance their overall testing experience.

Description: Codapi is a platform for embedding interactive code snippets directly into your product documentation, online course or blog post.
Codapi manages sandboxes (isolated execution environments) and provides an API to execute code in these sandboxes. It also provides a JavaScript widget codapi-js for easier integration.

Source: https://github.com/nalgeon/codapi

Description: PageSpy is a remote debugging tool for web project. Based on encapsulation of native web APIs, it filters and transforms the parameters of native methods when called, and converts into messages with specific format for consumption by the debugger client. The debugger presents ui in an interactive devtools-like for easy viewing after receives the message data.

Description: Free & OpenSource REST API Testing Tool for all levels in a Test Pyramid

Description: Improve your Website Performance and score higher in Web Vitals using SpeedVitals Performance Testing Tool.

Description: Is my site using HTTP3? Check HTTP3 service on any URL. Test QUIC service, too.

Description: Sa11y is an accessibility quality assurance tool that visually highlights common accessibility and usability issues.

Description: Yellow Lab Tools is a free online web performance analyzer. It audits a webpage for performance and front-end quality issues.

Description: Responsinator. The Responsinator is designed to test responsive websites on different device resolutions

Description: Am I Responsive?. Show off how responsive design looks across different browsers easily with this 4 in 1 viewport tool. See how your site looks on desktop, laptop, ipad & iphone.

Description: Perf Track. Tracking framework performance at scale

Description: PageSpeed Insights

Description: Locust - A modern load testing framework

Description: Jest

Description: SlimerJS. A scriptable web browser for web testing, web scraping, network monitoring...

Description: Appium: Mobile App Automation Made Awesome.

Description: IE NetRenderer - Internet Explorer Compatibility Check -. Free online HTML tool that shows instantly how your website looks like in Microsoft Internet Explorer 7, 6 and 5.5.

Description: MobileTest.me - Test your mobile sites and responsive web designs. MobileTest.me - Test your mobile sites and web applications right from your browser