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Web Frontend open-source projects

OpenSrc lists 168 repositories about Web Frontend with open issues for new contributors, and 84 of them are first-PR friendly. Between them they have 2,503 open good first issues and 3,151 help-wanted issues. The median welcome score is 72/100, and the best-scored right now are vuetifyjs/vuetify, dotnet/aspnetcore and nexu-io/open-design. Most are written in TypeScript, JavaScript and Rust. Many also touch Machine Learning & AI and Mobile.

168 repos by best score

Filter these in the directory
  • 🐉 Vue Component Framework

    11good first issues+13 help wanted
    • TypeScript
    • Field: Web Frontend
    • Stars:41K
    • CONTRIBUTING
    • replies in ~6h
    Score93 out of 100 contributor score, very welcomingFirst-PR friendly
  • ASP.NET Core is a cross-platform .NET framework for building modern cloud-based web applications on Windows…

    15good first issues+141 help wanted
    • C#
    • Field: Web Frontend
    • Field: DevOps
    • Stars:38.5K
    • MIT
    • CONTRIBUTING
    • replies in ~2d
    Score92 out of 100 contributor score, very welcomingFirst-PR friendly
  • 🎨 Best DeepSeek Harness Design Plugin. The open-source Claude Design alternative. 🖥️ Local-first desktop…

    68good first issues+206 help wanted
    • TypeScript
    • Field: Web Frontend
    • Field: Machine Learning
    • Stars:98.6K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~6m
    Score91 out of 100 contributor score, very welcomingFirst-PR friendly
  • .NET MAUI is the .NET Multi-platform App UI, a framework for building native device applications spanning…

    33good first issues+3 help wanted
    • C#
    • Field: Mobile
    • Field: Web Frontend
    • Stars:23.3K
    • MIT
    • CONTRIBUTING
    Score91 out of 100 contributor score, very welcomingFirst-PR friendly
  • A collection of libraries and tools that help you build adaptive, accessible, and robust user experiences.

    8good first issues+26 help wanted
    • TypeScript
    • Field: Accessibility
    • Field: Web Frontend
    • Stars:15.9K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~4h
    Score91 out of 100 contributor score, very welcomingFirst-PR friendly
  • Local UI to run and train LLMs and diffusion models. Supports GGUF, MLX, Qwen3.8, DeepSeek-V4, MiniMax-H3…

    4good first issues+19 help wanted
    • Python
    • Field: Machine Learning
    • Field: Web Frontend
    • Stars:77K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~15h
    Score90 out of 100 contributor score, very welcomingFirst-PR friendly
  • Blazor Component Library based on Material Design principles. Do more with Blazor, utilizing CSS and keeping…

    69good first issues+115 help wanted
    • C#
    • Field: Web Frontend
    • Stars:10.6K
    • MIT
    • CONTRIBUTING
    • replies in ~6d
    Score89 out of 100 contributor score, very welcoming
  • Open-source platform for building cross-platform native Mobile, Web, Desktop, and Embedded apps from a single…

    73good first issues+6 help wanted
    • C#
    • Field: Mobile
    • Field: OS
    • Stars:10.1K
    • Apache-2.0
    • CONTRIBUTING
    Score89 out of 100 contributor score, very welcomingFirst-PR friendly
  • A libre lightweight streaming front-end for Android.

    49good first issues+39 help wanted
    • Java
    • Field: Mobile
    • Field: Web Frontend
    • Stars:39.8K
    • GPL-3.0
    • CONTRIBUTING
    • replies in ~26h
    Score88 out of 100 contributor score, very welcomingFirst-PR friendly
  • Neo.mjs is a self-evolving software organism: a professional end-to-end AI engineering team whose cross-model…

    7good first issues+12 help wanted
    • JavaScript
    • Field: Machine Learning
    • Field: Web Frontend
    • Stars:3.3K
    • MIT
    • CONTRIBUTING
    • replies in ~3h
    Score88 out of 100 contributor score, very welcomingFirst-PR friendly
  • A BPMN 2.0 rendering toolkit and web modeler.

    9good first issues+1 help wanted
    • JavaScript
    • Field: Web Frontend
    • Field: Graphics
    • Stars:9.7K
    • CONTRIBUTING
    • replies in ~3h
    Score87 out of 100 contributor score, very welcomingFirst-PR friendly
  • AI agents can generate code, but still struggle to understand what they build. Reticle brings Jev-style…

    27good first issues+68 help wanted
    • TypeScript
    • Field: Machine Learning
    • Field: Web Frontend
    • Stars:915
    • CONTRIBUTING
    Score87 out of 100 contributor score, very welcomingFirst-PR friendly
  • Defold is a completely free to use game engine for development of desktop, console, mobile and web games.

    8good first issues
    • C++
    • Field: Game Dev
    • Field: Web Frontend
    • Stars:6.3K
    • CONTRIBUTING
    • replies in ~21h
    Score86 out of 100 contributor score, very welcomingFirst-PR friendly
  • Mobile web browser providing access to websites that use the Ethereum blockchain

    25good first issues
    • TypeScript
    • Field: Mobile
    • Field: Blockchain
    • Stars:3K
    • CONTRIBUTING
    Score86 out of 100 contributor score, very welcomingFirst-PR friendly
  • A block-style editor with clean JSON output

    41good first issues
    • TypeScript
    • Field: Editors
    • Field: Web Frontend
    • Stars:32K
    • Apache-2.0
    • replies in ~6h
    Score85 out of 100 contributor score, very welcoming
  • The Community Maintained High Velocity Web Framework For Java and Scala.

    26good first issues+68 help wanted
    • Scala
    • Field: Web Frontend
    • Stars:12.6K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~15d
    Score85 out of 100 contributor score, very welcoming
  • The Cyber Swiss Army Knife - a web app for encryption, encoding, compression and data analysis

    3good first issues+54 help wanted
    • JavaScript
    • Field: Data Science
    • Field: Security
    • Stars:36K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~2d
    Score84 out of 100 contributor score, very welcomingFirst-PR friendly
  • The official source for MDN Web Docs content. Home to over 14,000 pages of documentation about HTML, CSS, JS…

    1good first issue+53 help wanted
    • Markdown
    • Field: Web Frontend
    • Field: Networking
    • Stars:11K
    • CONTRIBUTING
    • replies in ~4h
    Score84 out of 100 contributor score, very welcoming
  • #1 PDF Application on GitHub that lets you edit PDFs on any device anywhere

    4good first issues
    • Java
    • Field: DevOps
    • Field: Web Frontend
    • Stars:93.2K
    • CONTRIBUTING
    • replies in ~9h
    Score83 out of 100 contributor score, very welcomingFirst-PR friendly
  • Storybook is the industry standard workshop for building, documenting, and testing UI components in isolation

    5good first issues+165 help wanted
    • TypeScript
    • Field: Web Frontend
    • Field: Mobile
    • Stars:91.2K
    • MIT
    • CONTRIBUTING
    Score83 out of 100 contributor score, very welcomingFirst-PR friendly
  • A Rust compiler front-end for IDEs

    19good first issues
    • Rust
    • Field: Compilers
    • Field: Web Frontend
    • Stars:16.9K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~4h
    Score83 out of 100 contributor score, very welcomingFirst-PR friendly
  • Painless E2E Automation for Mobile and Web

    10good first issues
    • Kotlin
    • Field: Mobile
    • Field: Web Frontend
    • Stars:15.8K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~30m
    Score83 out of 100 contributor score, very welcomingFirst-PR friendly
  • A web interface for MySQL and MariaDB

    53good first issues+92 help wanted
    • PHP
    • Field: Databases
    • Field: Web Frontend
    • Stars:7.9K
    • GPL-2.0
    • CONTRIBUTING
    • replies in ~18d
    Score83 out of 100 contributor score, very welcoming
  • Manage multiple Claude Code, OpenCode agents from either TUI or Web for easy access on mobile. Also supports…

    4good first issues+1 help wanted
    • Rust
    • Field: CLI Tools
    • Field: Machine Learning
    • Stars:3.3K
    • MIT
    • CONTRIBUTING
    • replies in ~6h
    Score83 out of 100 contributor score, very welcomingFirst-PR friendly
  • :hedgehog: PostHog is the leading platform for building self-driving products. Our developer tools – AI…

    8good first issues
    • Python
    • Field: Data Science
    • Field: Machine Learning
    • Stars:40K
    • CONTRIBUTING
    Score82 out of 100 contributor score, very welcomingFirst-PR friendly
  • The Frontend Stack for Agents & Generative UI. React, Angular, Mobile, Slack, and more. Makers of the AG-UI…

    5good first issues+9 help wanted
    • TypeScript
    • Field: Machine Learning
    • Field: Web Frontend
    • Stars:37.6K
    • MIT
    • CONTRIBUTING
    Score82 out of 100 contributor score, very welcomingFirst-PR friendly
  • p5.js is a client-side JS platform that empowers artists, designers, students, and anyone to learn to code…

    11good first issues+46 help wanted
    • JavaScript
    • Field: Graphics
    • Field: Web Frontend
    • Stars:24.1K
    • LGPL-2.1
    • CONTRIBUTING
    • replies in ~9h
    Score82 out of 100 contributor score, very welcomingFirst-PR friendly
  • Windows Forms is a .NET UI framework for building Windows desktop applications.

    4good first issues+90 help wanted
    • C#
    • Field: Web Frontend
    • Stars:4.9K
    • MIT
    • CONTRIBUTING
    • replies in ~3d
    Score82 out of 100 contributor score, very welcomingFirst-PR friendly
  • UArizona's web content management system built with Drupal.

    20good first issues
    • PHP
    • Field: Web Frontend
    • Stars:52
    • GPL-2.0
    • CONTRIBUTING
    • replies in ~22h
    Score82 out of 100 contributor score, very welcomingFirst-PR friendly
  • JavaScript API for Chrome and Firefox

    3good first issues
    • TypeScript
    • Field: Testing
    • Field: Editors
    • Stars:95.6K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~8h
    Score81 out of 100 contributor score, very welcomingFirst-PR friendly

Showing 30 of 168 repos

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