// HACKER NEWS — CYBERSECURITY

Open Oscar Server: open-source server compatible with AIM and ICQ clients

Published: 30/08/2026, 00:33

Open OSCAR Server is an open-source instant messaging server compatible with classic AIM and ICQ clients written in golang. 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. Check out the Open OSCAR Server Discord server to get help or find out how to get involved. The Management API provides functionality for administering the server (see OpenAPI spec). The following shows you how to run these commands via the command line. Run these commands from PowerShell, not Command Prompt. This request lists sessions for all logged in users.