Firebird .NET data provider v1.0 released
Yesterday, the Firebird team released their .NET provider for the Open Source database Firebird (based on the Interbase code). The provider is also open source and of course free. I haven't played with the Firebird database recently but according to the features Interbase had and looking at what the Firebird team added / updated in the source code, it is a massive alternative for those developers who need a true RDBMS with ACID compliance throughout the system and full stored procedure and trigger support but can't afford SqlServer (or alternatives which cost even more money).
The links:
Firebird works on a flavor of operating systems including windows.