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A curated meta-list of curated lists organized by technology domain. The repository acts as a directory pointing to hundreds of specialized awesome lists covering programming languages, platforms, frameworks, and tooling. All content is community-contributed under the CC0 public domain dedication.

Public APIs is a community-curated GitHub repository listing free, publicly accessible APIs across a wide range of categories, with auth type, HTTPS, and CORS noted for each entry. It's a browsable reference, not a library to install.

freeCodeCamp is a free, self-paced curriculum for learning to code, published as open source at freeCodeCamp/freeCodeCamp. It's a 501(c)(3) nonprofit funded by donor support, structured around six certifications in its Full-Stack Developer Curriculum, each gated by required projects instead of open-book quizzes. The repository also carries beta language certifications for developers, interview-prep resources, and the code that runs the live freecodecamp.org platform.

EbookFoundation/free-programming-books is a community-curated index of free learning materials for developers. What began as a Stack Overflow list has grown into a comprehensive resource, now overseen by the Free Ebook Foundation. It categorizes a wide range of content, including books by language and subject, free online courses, cheat sheets, interactive programming tutorials, problem sets, podcasts, screencasts, and browser-based programming playgrounds. Many of these resources are available in dozens of languages beyond English, and you can navigate the collection through its dedicated search website or by browsing the repository's markdown files.

The System Design Primer is donnemartin's GitHub collection for learning large-scale system design and preparing for the system design interview. It combines topic explainers, a four-step interview framework, worked case studies, and Anki flashcards into one repository.

roadmap.sh is an open-source collection of role- and skill-based learning roadmaps maintained on GitHub as nilbuild/developer-roadmap. Each roadmap renders as an interactive diagram whose nodes link to a short markdown write-up, and the repository also bundles best-practices guides and self-test question sets alongside the roadmaps themselves.

Coding Interview University is a GitHub repository maintained under the jwasham account that lays out a checklist-based study plan for the computer science fundamentals a software engineering interview tests. It covers sorting, trees, and graphs as a required track, then an explicitly optional back half on system design and extra tree structures for engineers with more experience. The README frames it as the author's own multi-month self-study process, later published for others to follow, and community members have translated it into multiple languages.

Awesome Python is a curated list maintained at vinta/awesome-python that groups Python frameworks, libraries, tools, and other resources into 14 categories, from AI & ML to Security and Other. The README calls it an opinionated guide rather than an exhaustive one, and points readers to a companion site, awesome-python.com, for searching and filtering entries instead of scrolling the raw file.

Awesome-Selfhosted is a community-maintained GitHub list at awesome-selfhosted/awesome-selfhosted that catalogs Free Software network-service and web-app projects meant for running on a server you control rather than someone else's cloud. Entries are grouped by category, each tagged with a license and a language or deployment option, and the project keeps proprietary alternatives on a separate Non-Free page.

Project Based Learning is a GitHub repository maintained by practical-tutorials that curates external tutorials for building real applications from scratch, organized by primary programming language such as C/C++, Java, and JavaScript. Rather than hosting original lessons, the README lists direct links to blog posts, book chapters, and video series so a developer can pick a project and follow someone else's from-scratch build.

996.ICU is a high-profile GitHub movement that protests China's 996 overtime culture—work by 9am, leave at 9pm, six days a week. It provides the Anti-996 License and maintains a company blacklist to advocate for developer labor rights and work-life balance in the tech industry.

Superpowers is an open-source (MIT) skills library and bootstrap instruction set that turns a coding agent's ad-hoc habits into a fixed pipeline: brainstorm a spec, write a plan, build under TDD, review, then close out the branch. Skills trigger automatically once installed, and the same methodology works across eleven different agent harnesses, each requiring its own install step.

A spring-boot starter for retrofit, supports rapid integration and feature enhancements.（适用于retrofit的spring-boot-starter，支持快速集成和功能增强）

Bolt is an open source orchestration tool that automates the manual work it takes to maintain your infrastructure on an as-needed basis or as part of a greater orchestration workflow. It can be installed on your local workstation and connects directly to remote nodes with SSH or WinRM, so you are not required to install any agent software.

😎 Tracy: the addictive tool to ease debugging PHP code for cool developers. Friendly design, logging, profiler, advanced features like debugging AJAX calls or CLI support. You will love it.

Scripts and samples to support Confluent Demos, Talks, and Blogs. Not all of the examples in this repository are kept up to date. For automated tutorials and QA'd code, see https://github.com/confluentinc/tutorials/

eBay's TSV Utilities: Command line tools for large, tabular data files. Filtering, statistics, sampling, joins and more.

Alpakka Kafka connector - Alpakka is a Reactive Enterprise Integration library for Java and Scala, based on Reactive Streams and Akka.

Doctrine2 behavior traits that help handling Blameable, Loggable, Sluggable, SoftDeletable, Uuidable, Timestampable, Translatable, Tree behavior

A training framework for Stable Baselines3 reinforcement learning agents, with hyperparameter optimization and pre-trained agents included.