This can be really helpful in case you are planning for an upgrade or trying to migrate content from one another.
I found this Blog where Dirk has tried to compile all of them in a tabular format. Nice work from him !
Updated: Aug 17, 2010
Bringing the tabular data from Dirk's site here as recently I experienced problem accessing his site.
Remember that you can find these version numbers in Central Administration -> Operations -> Servers in Farm (/_admin/FarmServers.aspx)
Here is a quick table for those who want to find out what version of WSS/MOSS you are currently patched up to:
| Service Pack/Hotfix Version | WSS V3.0 | MOSS 2007 |
| 12.0.0.6318 | 12.0.0.6318 | |
| Post-SP1 hotfix (KB948945) | 12.0.0.6303 | 12.0.0.6303 |
| Post-SP1 hotfix (KB941274) | 12.0.0.6301 | 12.0.0.6301 |
| Post-SP1 hotfix (KB941422) | 12.0.0.6300 | 12.0.0.6300 |
| Service Pack 1 | 12.0.0.6219 | 12.0.0.6219 |
| Release To Manufacturing (RTM) | 12.0.0.4518 | 12.0.0.4518 |
