freeCodeCamp.org's open-source codebase and curriculum. Learn math, programming, and computer science for free.
- learn-to-code
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Interactive roadmaps, guides and other educational content to help developers grow in their careers.
- computer-science
- roadmap
- developer-roadmap
- frontend-roadmap
Build a system, load it until it breaks, and watch why. A system design simulator for learning distributed systems.
Create/Sell courses and digital downloads and publish blogs on your own branded website. An open source alternative to Teachable, Thinkific, Podia and the likes.
The ESP32-S3 bench guide as a React app: live pinout, lessons with interactive simulators, a code reader for the esp-labs firmware, and the bench log. In 11 languages.
The universe in numbers. Free, open-source calculators for everything countable.
learn stuff with pen + paper + AI
- ai-tutor
- education
- local-first
☯ The simplest signal library possible