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Strata Source

This is the GitHub organization for Strata Source, an advanced, community-developed branch of the Source Engine. Here you can find our open-source components, such as our issue trackers, documentation, wiki software and some of our tooling. Contributions are always welcome! Please see our Contribution Guidelines to get started.

Games using Strata Source include Momentum Mod, Portal 2: Community Edition and Portal: Revolution.

Quick Links

Strata Source

Momentum Mod

Portal 2: Community Edition

Contribution Guidelines

We ask that you follow these guidelines when contributing to any of our repositories:

  • Use the rebase workflow to avoid unnecessary merge commits. This helps us keep a clean & linear commit history that's easy to review. We understand that this workflow can be intimidating for those new to git; please let us know if this is the case, we can help you clean up branch history before merging. See this tutorial for an explanation of the rebase workflow.
  • Avoid excessively large commits, as it's difficult for us to review.
  • Commit messages should follow conventional commits. We aren't super strict with these, but we prefer commits that are prefixed with feat: fix: or chore: at least.
  • Commit messages should be descriptive. Avoid generic and nondescript messages like "fix: fixed bug" or "fix: mistake".

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  1. Issue tracker for Strata Source

    60 3

  2. Task tracker for Portal 2: Community Edition

    232 4

  3. Markdown pages for the wiki

    Python 16 27

  4. vtex2 vtex2 Public archive

    Deprecated in favor of: https://github.com/craftablescience/MareTF

    C++ 63 11

  5. Example assets and code for Strata Source games

    AngelScript 4 1

Repositories

Showing 10 of 74 repositories

  • StrataSource/p2ce-mod-template’s past year of commit activity

    ReScript

    14 7 0 1

    Updated Jun 14, 2026

  • StrataSource/FGD’s past year of commit activity

  • angelscript Public

    AngelScript fork with changes needed for Strata Source

    StrataSource/angelscript’s past year of commit activity

    C++

    8

    0

    0 0

    Updated Jun 14, 2026

  • StrataSource/p2ce-panorama-ui’s past year of commit activity

    TypeScript

    19

    MIT

    22 32 5

    Updated Jun 10, 2026

  • pano-typed Public

    Near-full coverage of Panorama's APIs and data structures with Typescript definitions.

    StrataSource/pano-typed’s past year of commit activity

    CSS

    8

    MIT

    2 0 6

    Updated Jun 10, 2026

  • p2ce-addons Public

    Local addons shipped with Portal 2: CE

    StrataSource/p2ce-addons’s past year of commit activity

    Squirrel

    8

    CC0-1.0

    6 0 2

    Updated Jun 9, 2026

  • Wiki Public

    Markdown pages for the wiki

    StrataSource/Wiki’s past year of commit activity

    Python

    16 27 15 7

    Updated Jun 2, 2026

  • strata-wiki Public

    The wiki site for the Strata Source Official Wiki

    StrataSource/strata-wiki’s past year of commit activity

    Svelte

    4 5 4 2

    Updated May 17, 2026

  • StrataSource/VPhysics-Jolt’s past year of commit activity

    C++

    12

    MIT

    98 0 1

    Updated May 12, 2026

  • StrataSource/Portal-2-Community-Edition’s past year of commit activity