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Best Open Source engineering Libraries

A curated list of the most popular GitHub repositories tagged with engineering. Select any project to visualize its architecture and dive into the codebase using RepoMind's AI engine.

#1github/spec-kit

💫 Toolkit to help you get started with Spec-Driven Development

70,967Python
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#2kamranahmedse/design-patterns-for-humans

An ultra-simplified explanation to design patterns

47,564
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#3karanpratapsingh/system-design

Learn how to design systems at scale and prepare for system design interviews

40,556
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#4CSSEGISandData/COVID-19

Novel Coronavirus (COVID-19) Cases, provided by JHU CSSE

28,990
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#5FreeCAD/FreeCAD

Official source code of FreeCAD, a free and opensource multiplatform 3D parametric modeler.

28,718C++
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#6kdeldycke/awesome-falsehood

😱 Falsehoods Programmers Believe in

27,067
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#7Fission-AI/OpenSpec

Spec-driven development (SDD) for AI coding assistants.

24,950TypeScript
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#8visenger/awesome-mlops

A curated list of references for MLOps

13,711
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#9EveryInc/compound-engineering-plugin

Official Claude Code compound engineering plugin

9,346TypeScript
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#10shashank88/system_design

Preparation links and resources for system design questions

9,174
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#11sourcerer-io/sourcerer-app

🦄 Sourcerer app makes a visual profile from your GitHub and git repositories.

6,744Kotlin
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#12fulldecent/system-bus-radio

Transmits AM radio on computers without radio transmitting hardware.

6,655C
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