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Public APIs is a crowdsourced, categorized collection of public APIs for developers, covering topics such as animals, books, cryptocurrencies, development, music and weather. The site states it lists over 1400 public APIs.
RustPython is an open source Python 3 interpreter written in Rust. It can be embedded into Rust programs as a scripting language or compiled to WebAssembly to run Python in the browser. It is released under the MIT license.
Underdash is a page of JavaScript snippets for manipulating collections. It presents synchronous, iterator and async iterator variants of functions such as chunks, concat, dropWhile and equals, intended for copying and pasting as needed.
The Algorithms - C++ is a repository of open-source implementations of various algorithms in C++, released under the MIT License. It covers topics including computer science, mathematics, statistics, data science, machine learning and engineering, and is intended as a learning resource for educators and students. The documentation is generated from the source code.
The React TypeScript Cheatsheet is a cheatsheet for developers using React with TypeScript. It provides an introduction, guidance on typing component props, hooks, class components, defaultProps, forms and events, context, refs, portals, error boundaries, concurrent rendering, and reusable patterns, plus API references for @types/react types such as ComponentProps, CSSProperties, ReactNode, and Ref.
A handpicked collection of lightweight JavaScript plugins, components and libraries for use in web projects. The site indexes tools such as sliders, modal dialogs, select controls, date pickers, color pickers, image editors, animation libraries, charting libraries and lazy loaders, linking each to demo, source code and npm pages.
An open-source resource for learning data structures and algorithms through implementations in various programming languages. The site covers programming languages including Python, Java, JavaScript, Go, Rust, and C++, and organizes algorithms into categories such as sorting, searching, and graph algorithms. It also provides guidance on contributing implementations.
Automate the Boring Stuff with Python is a book by Al Sweigart, free to read under a Creative Commons license. It teaches Python fundamentals and projects for automating tasks such as searching the web, editing files and spreadsheets, and handling email.
JavaScript Standard Style is a style guide, linter, and formatter for JavaScript. It requires no configuration and can automatically format code with the standard --fix command. It is installed as a Node command line program via npm.
A curated collection of front-end snippets intended to save time, described as practical code without fluff. The site presents examples such as buttons and checkboxes, including a frosted glass parallax button built with HTML, CSS, and JavaScript.
JavaScript Deobfuscator is a cleaner and deobfuscator for JavaScript files that is described as working in one click. It is also described as a simple deobfuscator for mangled or obfuscated JavaScript files.
Component Party is a website that compares JavaScript frameworks side-by-side, including React, Vue, Angular, Svelte and Solid.js. It shows syntax differences, features and code examples for common tasks such as reactivity, templating, styling, loops, events and conditional rendering.
CompCert is a formally verified C compiler that comes with a machine-checked proof that generated code behaves as prescribed by the source program's semantics. It is described as a high-assurance compiler for almost all of the C language (ISO C 2011), generating code for ARM, PowerPC, RISC-V and x86 processors.
Bun is an all-in-one JavaScript and TypeScript toolkit shipped as a single executable. It includes a runtime designed as a drop-in replacement for Node.js, a package manager, a Jest-compatible test runner and a bundler. The documentation also lists a type checker, linter and formatter.
Eclipse Adoptium provides prebuilt OpenJDK binaries built from open source build scripts and infrastructure. Its Temurin distribution is an OpenJDK-based Java runtime offered as a free download, with documentation covering installation, migration, supported platforms and container images. Adoptium also publishes build and test infrastructure artifacts and quality assurance tests.
Bytecode Viewer is a Java reverse engineering suite with a GUI that includes Java and APK decompilers, bytecode editors and a compiler. It supports loading classes, jars and Android APKs, and is released as free and open source under GPL v3.
A site offering coding articles on topics such as Git, JavaScript and web development. The listing reports 694 articles, browsable by collection, with popular and latest content shown, including pieces on Git aliases, a JavaScript LeetCode solution and the Speculation Rules API.
A collection of cheatsheets for popular programming languages, frameworks and development tools, each intended to include everything needed in one file. It covers languages such as Bash, C, C# and JavaScript, backend tools including Django and Node.js, frontend frameworks such as React and Vue, plus Redis, Docker and Kubernetes.
CheatSheets.zip is a repository of quick reference sheets and cheat sheets for developers, described as crafted by the open community. It lists cheat sheets covering topics such as AI tools, programming languages, operating systems, databases and keyboard shortcuts.
A website collecting cheat sheets, round-ups, quick reference cards and quick reference guides on a single page, organized by topics such as .NET, Ada, Adobe Systems, AJAX, Algebra and Amazon Web Services. Entries link to external PDF or HTML documents and list official project websites.
A GitHub repository listing secrets, passwords, API keys and tokens commonly stored in system environment variables. It notes that attackers can read environment variable values through exploits such as CVE-2021-44228 JNDI log4j and suggests practices to avoid leaks, including blocking requests containing system environment variables and storing paths to config files instead of clean values.
A WebAIM tool for checking foreground and background color contrast in RGB hexadecimal format or with a color picker. It reports a contrast ratio and WCAG AA and AAA pass/fail states for normal text, large text, graphical objects and user interface components. It also functions as a basic API when &api is appended to a permalink.
A cookbook of curl command recipes, created by Browserling, covering common tasks such as making POST and GET requests, adding POST data, constructing query strings, and setting HTTP headers. It also lists arguments for cookies, redirects, authentication, proxies, and saving responses to files.
UI Design Daily is a collection of open source UI resources, described as a large database of free UI components and design source files. Individual design components, such as a price card, are created with Figma, and the source file can be downloaded for free.
