Cypress

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Fast, easy browser testing. Time-travel through commands and screenshots.

8.5FreeFree plan

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Microsoft's end-to-end test runner for Chromium, Firefox and WebKit.

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JavaScript API to control Chrome and Firefox — scraping, screenshots, testing.

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Git hosting, pull requests, Actions and the default home for open source.

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Guides for recreating databases, browsers, Git and other systems from scratch.

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Workshop for UI components — isolate, test and document every state.

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Open curriculum to learn math, programming and computer science for free.

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Algorithms and data structures in JavaScript, with explanations and further reading.

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Book series that dives into the core mechanisms of JavaScript. Free to read online.

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