LMDB is an ultra-fast, ultra-compact key-value data store developed by Symas for the OpenLDAP Project. It uses memory-mapped files, so it has the read performance of a pure in-memory database while still offering the persistence of standard disk-based databases, and is only limited to the size of the virtual address space (it is not limited to the size of physical RAM).
aime is a simple, C-like programming language and an interpreter, both designed to be embeddable in applications. The language is straightforward, trivial, and direct. Its syntax is simpler than that of C, while still providing for full object management, higher order functions, and references. The interpreter is secure and expressive, allowing comprehensive control over program execution and providing powerful methods of application integration.
libvalhalla is a library written in C. It is a media scanner that stores various information in an SQLite database and relies on FFmpeg (libavformat and libavutil) and libcurl. It features many Internet grabbers that allow automatic downloading of covers, lyrics, and information on media files, tag retrieval in video and music files, and so on.
libx1f4l2 is a data structures library. Featured are self balancing BSTs and self balancing BST backed lists. The BST (binary search tree) selection includes AVL, red/black, AA, and RBST trees in simple, parent pointer, and threaded flavors. The BST backed lists are all-purpose lists, allowing for sequential and random access. The complexity for most operations is log(N), including reading, inserting, and deleting, random or sequential. Other library features include pointer sets and tries. A collection of demo, test, and data structure comparison programs is included.