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1,526 open-source projects with open good first issues, scored on how welcoming they are to a first PR. Say what you like: a language, a field, fast maintainers.

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The directory

1,526 projects

by best score

  • The Julia Programming Language

    64good first issues+92 contributions welcome
    • Julia
    • Field: Scientific Computing
    • Field: Compilers
    • Stars:49.2K
    • MIT
    • CONTRIBUTING
    • replies in ~8h
    Score99 out of 100 contributor score, very welcomingFirst-PR friendly
  • A refreshingly simple data-driven game engine built in Rust

    55good first issues
    • Rust
    • Field: Game Dev
    • Stars:48.5K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~2h
    Score99 out of 100 contributor score, very welcomingFirst-PR friendly
  • Official source code of FreeCAD, a free and opensource multiplatform 3D parametric modeler.

    153good first issues+141 contributions welcome
    • C++
    • Field: OS
    • Field: Graphics
    • Stars:33.9K
    • LGPL-2.1
    • CONTRIBUTING
    • replies in ~12h
    Score99 out of 100 contributor score, very welcomingFirst-PR friendly
  • Event Driven Orchestration & Scheduling Platform for Mission Critical Applications

    112good first issues
    • Java
    • Field: DevOps
    • Field: Data Science
    • Stars:28.5K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~14h
    Score99 out of 100 contributor score, very welcomingFirst-PR friendly
  • Apache Airflow - A platform to programmatically author, schedule, and monitor workflows

    135good first issues
    • Python
    • Field: Data Science
    • Field: Machine Learning
    • Stars:47K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~48m
    Score98 out of 100 contributor score, very welcomingFirst-PR friendly
  • Cognee is the open-source AI memory platform for agents. Give your AI agents persistent long-term memory with…

    59good first issues+2 contributions welcome
    • Python
    • Field: Machine Learning
    • Field: Databases
    • Stars:31.2K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~23h
    Score98 out of 100 contributor score, very welcomingFirst-PR friendly
  • The Symfony PHP framework

    43good first issues+49 contributions welcome
    • PHP
    • Field: Backend
    • Stars:31.2K
    • MIT
    • CONTRIBUTING
    • replies in ~48m
    Score98 out of 100 contributor score, very welcomingFirst-PR friendly
  • 🍃 Organic Maps is a free Android & iOS offline maps app for more than 6M travelers, tourists, hikers, and…

    172good first issues
    • C++
    • Field: Mobile
    • Stars:15.5K
    • CONTRIBUTING
    • replies in ~4h
    Score98 out of 100 contributor score, very welcomingFirst-PR friendly
  • ☁️ Nextcloud server, a safe home for all your data

    65good first issues+14 contributions welcome
    • PHP
    • Field: DevOps
    • Stars:37K
    • AGPL-3.0
    • CONTRIBUTING
    • replies in ~16h
    Score97 out of 100 contributor score, very welcomingFirst-PR friendly
  • Cataclysm - Dark Days Ahead. A turn-based survival game set in a post-apocalyptic world.

    55good first issues+89 contributions welcome
    • C++
    • Field: Game Dev
    • Stars:13.3K
    • CONTRIBUTING
    • replies in ~4h
    Score97 out of 100 contributor score, very welcomingFirst-PR friendly
  • An open source, turn-based strategy game with a high fantasy theme.

    73good first issues
    • C++
    • Field: Game Dev
    • Stars:6.9K
    • GPL-2.0
    • CONTRIBUTING
    • replies in ~2h
    Score96 out of 100 contributor score, very welcomingFirst-PR friendly
  • UNIX-like reverse engineering framework and command-line toolset.

    67good first issues+39 contributions welcome
    • C
    • Field: Security
    • Field: CLI Tools
    • Stars:3.9K
    • LGPL-3.0
    • CONTRIBUTING
    • replies in ~9h
    Score96 out of 100 contributor score, very welcomingFirst-PR friendly
  • An open-source user mode debugger for Windows. Optimized for reverse engineering and malware analysis.

    44good first issues
    • C++
    • Field: Security
    • Field: OS
    • Stars:49.7K
    • CONTRIBUTING
    • replies in ~6h
    Score95 out of 100 contributor score, very welcomingFirst-PR friendly
  • Language Savant. If your repository's language is being reported incorrectly, send us a pull request!

    139good first issues+1 issue open to contributors
    • Ruby
    • Field: Data Science
    • Field: Editors
    • Stars:13.7K
    • MIT
    • CONTRIBUTING
    • replies in ~3h
    Score95 out of 100 contributor score, very welcomingFirst-PR friendly
  • A modeling solution for BPMN, DMN, and Forms based on bpmn.io. As a companion tool to your favorite IDE it…

    62good first issues+1 issue open to contributors
    • JavaScript
    • Field: Editors
    • Stars:1.7K
    • MIT
    • CONTRIBUTING
    • replies in ~8h
    Score95 out of 100 contributor score, very welcomingFirst-PR friendly
  • ⭐️ A friendly language for building type-safe, scalable systems!

    31good first issues+155 contributions welcome
    • Rust
    • Field: Compilers
    • Stars:22K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~19h
    Score94 out of 100 contributor score, very welcomingFirst-PR friendly
  • Computing-focused community centered around link aggregation and discussion

    124good first issues
    • Ruby
    • Field: Backend
    • Stars:4.8K
    • CONTRIBUTING
    • replies in ~15h
    Score94 out of 100 contributor score, very welcomingFirst-PR friendly
  • freeCodeCamp.org's open-source codebase and curriculum. Learn math, programming, and computer science for…

    17good first issues+12 contributions welcome
    • TypeScript
    • Field: Web Frontend
    • Field: Backend
    • Stars:456.5K
    • BSD-3-Clause
    • CONTRIBUTING
    • replies in ~11h
    Score93 out of 100 contributor score, very welcomingFirst-PR friendly
  • 🎨 Best DeepSeek Harness Design Plugin. The open-source Claude Design alternative. 🖥️ Local-first desktop…

    67good first issues+205 contributions welcome
    • TypeScript
    • Field: Web Frontend
    • Field: Machine Learning
    • Stars:98.8K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~6m
    Score93 out of 100 contributor score, very welcomingFirst-PR friendly
  • Point Cloud Library (PCL)

    55good first issues+28 contributions welcome
    • C++
    • Field: DevOps
    • Field: Machine Learning
    • Stars:11.1K
    • CONTRIBUTING
    • replies in ~17h
    Score93 out of 100 contributor score, very welcomingFirst-PR friendly
  • The new Windows Terminal and the original Windows console host, all in the same place!

    15good first issues+481 contributions welcome
    • C++
    • Field: CLI Tools
    • Field: OS
    • Stars:105K
    • MIT
    • CONTRIBUTING
    • replies in ~7h
    Score92 out of 100 contributor score, very welcomingFirst-PR friendly
  • UNIX-like reverse engineering framework and command-line toolset

    62good first issues
    • C
    • Field: Security
    • Field: CLI Tools
    • Stars:24.9K
    • CONTRIBUTING
    • replies in ~4h
    Score92 out of 100 contributor score, very welcomingFirst-PR friendly
  • Diablo build for modern operating systems

    23good first issues+23 contributions welcome
    • C++
    • Field: Game Dev
    • Field: OS
    • Stars:9.8K
    • CONTRIBUTING
    • replies in ~1h
    Score92 out of 100 contributor score, very welcomingFirst-PR friendly
  • ✨ The fundamental numerical library for JavaScript and TypeScript. ✨                   ⭐️ Star to support…

    128good first issues+31 contributions welcome
    • JavaScript
    • Field: Scientific Computing
    • Field: Data Science
    • Stars:6K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~2d
    Score92 out of 100 contributor score, very welcomingFirst-PR friendly
  • TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

    12good first issues+781 contributions welcome
    • Go
    • Field: Compilers
    • Stars:111.3K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~1h
    Score91 out of 100 contributor score, very welcomingFirst-PR friendly
  • Tensors and Dynamic neural networks in Python with strong GPU acceleration

    48good first issues
    • Python
    • Field: Machine Learning
    • Field: Graphics
    • Stars:103.5K
    • CONTRIBUTING
    • replies in ~25h
    Score91 out of 100 contributor score, very welcomingFirst-PR friendly
  • Ray is an AI compute engine. Ray consists of a core distributed runtime and a set of AI Libraries for…

    72good first issues+15 contributions welcome
    • Python
    • Field: Machine Learning
    • Field: Data Science
    • Stars:44K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~5h
    Score91 out of 100 contributor score, very welcomingFirst-PR friendly
  • Cross-platform Rust rewrite of the GNU coreutils

    19good first issues
    • Rust
    • Field: CLI Tools
    • Stars:24.2K
    • MIT
    • CONTRIBUTING
    • replies in ~2h
    Score91 out of 100 contributor score, very welcomingFirst-PR friendly
  • Dependency-Track is an intelligent Component Analysis platform that allows organizations to identify and…

    33good first issues+40 contributions welcome
    • Java
    • Field: Security
    • Stars:4.2K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~16h
    Score91 out of 100 contributor score, very welcomingFirst-PR friendly
  • Homework Submission, Automated Grading, and TA grading system.

    66good first issues
    • PHP
    • Stars:800
    • BSD-3-Clause
    • CONTRIBUTING
    • replies in ~20h
    Score91 out of 100 contributor score, very welcomingFirst-PR friendly

Showing 30 of 1,526 repos

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