mk6i

    mk6i/open-oscar-server

    Self-hostable instant messaging server compatible with classic AIM and ICQ clients written in golang. (Independently developed, not affiliated with or endorsed by AOL)

    backend
    chat
    golang
    instant-messaging
    retrocomputing
    Go
    MIT
    1.6K stars
    118 forks
    1.6K GitHub watchers
    Updated Nov 2, 2026
    View on GitHub

    Build with Backblaze B2

    SDKs, agent skills, IDE extensions, and reference pipelines from Backblaze Labs. All open source.

    Explore Backblaze Labs

    Loading star history...

    Where it stands

    Rank, growth pace and release cadence relative to everything GStars tracks.

    1 release in the last 90 days, the latest 12 days ago, with 13 contributors on GitHub.

    Use Cases & Benefits

    • Provides a self-hostable instant messaging server compatible with classic AIM and ICQ clients using the OSCAR protocol.
    • Enables retro instant messaging with modern server control and open-source flexibility, supporting multiple legacy client versions.
    • Use for reviving and maintaining private AIM or ICQ chat networks with full support for messaging, profiles, and file sharing.
    • Ideal for developers or hobbyists building custom chat solutions that integrate with vintage instant messaging clients.
    • Use for educational purposes to study or experiment with the OSCAR protocol and classic instant messaging infrastructure.

    Should you depend on it?

    License terms, project hygiene and risks, from GitHub metadata and GStars' snapshots.

    License

    MIT

    Permissive: commercial use, modification and redistribution are allowed with attribution.

    Community files

    • README: present

    Watch-outs

    No watch-outs from GStars' checks.

    General guidance from repository metadata, not legal advice. How we score

    From the README

    Open OSCAR Server is an open-source instant messaging server compatible with classic AIM and ICQ clients written in golang.

    Above: Pidgin IM connected to Open OSCAR Server

    Get up and running with Open OSCAR Server using one of these handy server quickstart guides:

    Don't have AIM installed yet? Check out the AIM Client Setup Guide.

    ...how about ICQ? Check out the ICQ Client Setup Guide.

    This project is under active development. Contributions are welcome!

    Follow this guide to learn how to compile and run Open OSCAR Server.

    Excerpt from the mk6i/open-oscar-server README on GitHub (MIT license). © its authors.Read the full README on GitHub

    Daily snapshots

    Stars gained per day, and how forks and open issues moved, from GStars' daily snapshots

    Forks

    118+8

    Open issues

    28-3

    Compared with peers in Backend

    Fastest-growing repositories GStars tracks in this cohort for the week of Nov 1, by 7-day star growth

    mk6i/open-oscar-server compared with Backend repositories by stars, 7-day star growth, health score and last release
    RepositoryStars+7dHealthLast release
    anthropics/skills187.8K+2.9K15—
    DuarteSantos8/openGym19.7K+2.4K602 days ago
    shiyu-coder/Kronos47.0K+2.3K16—
    NationalSecurityAgency/ghidra98.2K+2.3K6414 days ago
    microsoft/VibeVoice56.0K+1.1K29—
    mk6i/open-oscar-server1.6K—3612 days ago
    Category median56.0K+2.3K29—

    Discover Repositories

    Search across tracked repositories by name or description