Opus-CBCS

File Format
Name	Opus-CBCS
Ontology	Electronic File Formats E-Mail, newsgroups, and forums Opus-CBCS
Released	1985

Opus-CBCS (Opus Computer Based Conversation System) is a bulletin board system (BBS) program that runs under MS-DOS. It was popular from the mid-1980s through the 1990s.

Sample files

• Sample message file

Software and documentation

• Opus 1.73 files
• Opus 1.79 files

Other links and references

• History of Opus-CBCS
• Wikipedia article