Open OSCAR Server

Self-hostable instant messaging server compatible with classic AIM and ICQ clients.

Servicefree

Open OSCAR Server is an open-source, self-hostable instant messaging server that implements the OSCAR protocol used by classic AIM and ICQ clients. It supports buddy lists, chat rooms, file sharing, and a management API for administering users, letting retrocomputing hobbyists reconnect classic messaging clients to a server they run themselves. It is an independent project not affiliated with AOL or Yahoo.

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