XFree86® Version Numbering Schemes 
- 1. Development, Branches, and Releases 
- 2. Current Version Numbering Scheme 
- 2.1. Development Branch 
- 2.2. Maintenance Branch 
 
- 3. Version Numbering Scheme for XFree86 4.0.x. 
- 4. Pre-4.0 Development Versions 
- 5. Version Numbering Scheme for XFree86 3.3.x. 
- 6. Finding the XFree86 X Server Version From a Client