1)   db4o for .NET 5.2
db4o (database for objects) is the open source object database. Features include native .NET object persistence, object-oriented replication, automatic schema recognition, 400K footprint. Ideal for embedded use and in realtime systems.

 2)   db4o 4.0
db4o (database for objects) is the open source object database for Java and .NET. Features include: fast native object persistence, ACID transactions, query-by-example, S.O.D.A. object query API, automatic class schema recognition, small footprint.

 3)   db4o for Mono 5.2
db4o (database for objects) is the open source object database for Mono. Features include native object persistence, object-oriented replication, automatic schema recognition. Ideal for embedded use and in realtime systems.

 4)   Graybox OPC Server Toolkit 3.0.10
Graybox OPC Server Toolkit lets the programmer to create robust and highly effective OPC Servers within the shortest possible time. Toolkit supports OPC Data Access 1.00, 2.05a, 3.00. C++ and .NET API available.