You could have downloaded Omnis Web Server 5.1.1 for Mac from our software library for free. The actual developer of this free software for Mac is TigerLogic Corp. Omnis Web Server for Mac is included in Developer Tools.
From the developer:
Develop powerful and flexible enterprise applications.
The free Omnis Studio Standard Edition SDK offers a cost-effective rapid application development solution for building rich, fully featured business applications. Provides access to PostgreSQL and MySQL databases and use of the Omnis Version Control System.
You may want to check out more software for Mac, such as Omni Web, Abyss Web Server or Fast File Sharing Web Server, which might be similar to Omnis Web Server.
Network Tools
Document management