Oracle Berkeley DB - Oracle Berkeley DB is an extensive embedded key-value database library that is providing support with scalability in performance for data management services and applications.
MailStore - MailStore Home - A 100% free single-private-user desktop solution
VistaDB - VistaDB is an all-in-one embedded database software for.Net that is completely compliant with ADO.NET providing support for the entity framework.
Hornetsecurity Email Archiving - Hornetsecurity Email Archiving is one of the advanced software that offers long-term, unchangeable, and secure storage of important company information, data, and flies.
MySQL - The world's most popular open source database
Intradyn Email Archiver - Orca Email Archiver provides email archiving solution for local government and business.