Pervasive.SQL is a high performance, low-TCO database server designed to be easily embedded in applications and devices targeted for Linux, Novell, and Windows environments. Pervasive delivers both transactional and relational access methods to the application in a single box. Based on this unique model, the developer can use the data access model most appropriate for a given task. This means high-transaction volume applications can exploit the performance-optimized transactional access method while reporting, statistical and other complex query tasks are easily addressed through the relational access method.
libencio is a library providing a stdio-like interface for reading and writing of encrypted files (in MCrypt format only for now). Additionally, it provides full support for fseek()-like random read access of encrypted data. This allows one to operate on encrypted files as if they were ordinary, cleartext files. It could be used to provide MUAs with a layer to transparently handle encrypted attachments, as a backend to ffmpeg or mplayer to directly play encrypted files, or in combination with tar for encrypted backups. It uses libmcrypt and libmhash for encryption and hashing algorithms.
JumpBox for the MySQL Relational Database includes MySQL 5 along with PHPMyAdmin set up and ready to run. It's a great tool for developing database backed applications, and can also be used along with other JumpBoxes if you need to move the database into a separate virtual machine.