Vedis is an embeddable datastore C library built with over 70 commands. It is similar in concept to Redis, but without the networking layer, since Vedis run in the same process of the host application. Unlike most other datastores (e.g. memcache, Redis), Vedis does not have a separate server process. It reads and writes directly to ordinary disk files. A complete database with multiple collections is contained in a single disk file. The database file format is cross-platform; you can freely copy a database between 32-bit and 64-bit systems or between big-endian and little-endian architectures.
Valvula is a high performance mail policy daemon for Postfix. It provides out of the box support for sender login mismatch, mail quotas, per user and per domain blacklists and whitelists, and much more. It is system administrator friendly, providing many automatic features like automatically detecting Postfix MySQL databases to determine local domains and local accounts. It is fully extensible through plugins.