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OpenSrc
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HTML repos to contribute to

OpenSrc lists 27 HTML repositories with open issues for new contributors, and 11 of them are first-PR friendly. Between them they have 454 open good first issues and 318 help-wanted issues. The median welcome score is 68/100, and the best-scored right now are whatwg/html, w3c/aria and shauryagangrade/awesome-ai-prompts. Most are about Web Frontend, Accessibility and Backend & APIs.

27 repos by best score

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  • whatwg/html

    HTML Standard

    11good first issues
    • HTML
    • Stars:9.4K
    • CONTRIBUTING
    • replies in ~21h
    Score86 out of 100 contributor score, very welcomingFirst-PR friendly

  • w3c/aria

    Accessible Rich Internet Applications (WAI-ARIA)

    16good first issues+5 help wanted
    • HTML
    • Field: Accessibility
    • Stars:755
    • CONTRIBUTING
    • replies in ~20h
    Score80 out of 100 contributor score, very welcomingFirst-PR friendly

  • shauryagangrade/awesome-ai-prompts

    Curated copy-paste AI prompts for student developers - disciplined workflows for coding agents that verify…

    16good first issues+11 help wanted
    • HTML
    • Field: Machine Learning
    • Field: Editors
    • Stars:66
    • MIT
    • CONTRIBUTING
    Score80 out of 100 contributor score, very welcomingFirst-PR friendly

  • web-platform-tests/wpt

    Test suites for Web platform specs — including WHATWG, W3C, and others

    34good first issues+1 help wanted
    • HTML
    • Field: Web Frontend
    • Field: Testing
    • Stars:6.2K
    • CONTRIBUTING
    • replies in ~30d
    Score79 out of 100 contributor score, very welcoming

  • fossology/fossology

    FOSSology is an open source license compliance software system and toolkit. As a toolkit you can run…

    17good first issues
    • HTML
    • Field: Databases
    • Field: Web Frontend
    • Stars:1K
    • GPL-2.0
    • CONTRIBUTING
    • replies in ~3d
    Score77 out of 100 contributor score, very welcoming

  • S3DFX-CYBER/FindMyGSoC

    Find your perfect GSoC 2026 organization- filter all 184 selected orgs by your tech stack, language, and…

    57good first issues
    • HTML
    • Field: Web Frontend
    • Stars:174
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~20d
    Score77 out of 100 contributor score, very welcoming

  • openfoodfacts/openfoodfacts-server

    Open Food Facts database, API server and web interface - 🐪🦋 Perl, CSS and JS coders welcome 😊 For helping…

    43good first issues+16 help wanted
    • HTML
    • Field: Databases
    • Field: Web Frontend
    • Stars:1.2K
    • AGPL-3.0
    • CONTRIBUTING
    • replies in ~18d
    Score76 out of 100 contributor score, very welcoming

  • projectcontour/contour

    Contour is a Kubernetes ingress controller using Envoy proxy.

    23good first issues+67 help wanted
    • HTML
    • Field: DevOps
    • Field: Networking
    • Stars:4K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~15d
    Score75 out of 100 contributor score, very welcoming

  • data-prep-kit/data-prep-kit

    Open source project for data preparation for GenAI applications

    13good first issues
    • HTML
    • Field: Machine Learning
    • Stars:966
    • Apache-2.0
    • CONTRIBUTING
    Score75 out of 100 contributor score, very welcomingFirst-PR friendly

  • monarch-initiative/dismech

    Disease Mechanisms KB

    8good first issues+14 help wanted
    • HTML
    • Field: Machine Learning
    • Stars:63
    • BSD-3-Clause
    • CONTRIBUTING
    Score75 out of 100 contributor score, very welcomingFirst-PR friendly

  • openSUSE/get-o-o

    Website that provides detailed information about openSUSE distributions

    11good first issues+12 help wanted
    • HTML
    • Stars:101
    • CC-BY-SA-4.0
    • CONTRIBUTING
    Score72 out of 100 contributor score, welcomingFirst-PR friendly

  • kubernetes/website

    Kubernetes website and documentation repo:

    17good first issues+71 help wanted
    • HTML
    • Field: DevOps
    • Stars:5.4K
    • CC-BY-4.0
    • CONTRIBUTING
    Score71 out of 100 contributor score, welcomingFirst-PR friendly

  • HTTPArchive/almanac.httparchive.org

    HTTP Archive's annual "State of the Web" report made by the web community

    16good first issues+1 help wanted
    • HTML
    • Field: Web Frontend
    • Field: Networking
    • Stars:691
    • Apache-2.0
    • CONTRIBUTING
    Score69 out of 100 contributor score, welcomingFirst-PR friendly

  • tc39/ecma262

    Status, process, and documents for ECMA-262

    8good first issues
    • HTML
    • Stars:15.7K
    • CONTRIBUTING
    • replies in ~30d
    Score68 out of 100 contributor score, welcoming

  • Manavarya09/design-extract

    Extract any website's complete design system with one command. DTCG tokens, semantic+primitive+composite, MCP…

    4good first issues
    • HTML
    • Field: Web Frontend
    • Field: Accessibility
    • Stars:4.1K
    • MIT
    • CONTRIBUTING
    • replies in ~30d
    Score68 out of 100 contributor score, welcoming

  • nipreps/fmriprep

    fMRIPrep is a robust and easy-to-use pipeline for preprocessing of diverse fMRI data. The transparent…

    4good first issues+24 help wanted
    • HTML
    • Stars:755
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~12d
    Score68 out of 100 contributor score, welcoming

  • indentlabs/notebook

    Notebook.ai is a set of tools for writers, game designers, and roleplayers to create magnificent universes…

    10good first issues
    • HTML
    • Field: Data Science
    • Field: Game Dev
    • Stars:410
    • MIT
    • CONTRIBUTING
    Score66 out of 100 contributor score, welcomingFirst-PR friendly

  • City-Bureau/city-scrapers

    Scrape, standardize and share public meetings from local government websites

    16good first issues+3 help wanted
    • HTML
    • Field: Web Frontend
    • Stars:380
    • MIT
    • CONTRIBUTING
    Score66 out of 100 contributor score, welcomingFirst-PR friendly

  • w3c/aria-practices

    WAI-ARIA Authoring Practices Guide (APG)

    11good first issues+16 help wanted
    • HTML
    • Field: Accessibility
    • Field: Web Frontend
    • Stars:1.4K
    • CONTRIBUTING
    • replies in ~30d
    Score65 out of 100 contributor score, welcoming

  • matrix-org/matrix-spec

    The Matrix protocol specification

    12good first issues+10 help wanted
    • HTML
    • Field: Networking
    • Stars:330
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~30d
    Score65 out of 100 contributor score, welcoming

  • machinetranslate/machinetranslate.org

    Open information and community for machine translation

    50good first issues+48 help wanted
    • HTML
    • Stars:82
    • CC-BY-SA-4.0
    Score64 out of 100 contributor score, welcoming

  • javascript-tutorial/ko.javascript.info

    모던 JavaScript 튜토리얼(The Modern JavaScript Tutorial in Korean )

    10good first issues
    • HTML
    • Stars:2K
    • CONTRIBUTING
    Score63 out of 100 contributor score, welcomingFirst-PR friendly

  • mitre/heimdall2

    Heimdall Enterprise Server 2 lets you view, store, and compare automated security control scan results.

    18good first issues
    • HTML
    • Field: Security
    • Stars:290
    • replies in ~30d
    Score59 out of 100 contributor score, welcoming

  • istio/istio.io

    Source for the istio.io site

    5good first issues+10 help wanted
    • HTML
    • Field: Backend
    • Stars:820
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~30d
    Score57 out of 100 contributor score, welcoming

  • uswds/uswds-site

    The U.S. Web Design System documentation website, documenting the design system for the federal government.

    9good first issues
    • HTML
    • Field: Web Frontend
    • Field: Docs Tooling
    • Stars:247
    • CONTRIBUTING
    • replies in ~30d
    Score57 out of 100 contributor score, welcoming

  • Roll20/roll20-character-sheets

    Character sheet templates created by the community for use in Roll20 VTT. Submit a ticket at roll20.net/help…

    4good first issues+9 help wanted
    • HTML
    • Stars:1.2K
    • MIT
    • replies in ~25d
    Score55 out of 100 contributor score, welcoming