DBPersister (database persistent library) is a PHP library which helps you simply and clearly use your database, taking advantage of powerful object oriented programming. You can use DBPersister to manage data from your database to your application. You can do all the boring operations (like loading a single record, saving a single record (insert, update, replace), and deleting a single record) without writing SQL code.
Open RPG Maker is a 2D RPG creation utility, similar to the popular RPG Maker series. It is mostly based on RPG Maker 2003, but with some added features and more advanced usability. It allows users to create games similar to the original Final Fantasy games, such as FF5 and FF6, though it also supports Zelda-like games. Compared to the RPG Maker series, it supports additional image and music file formats, and 32x32 tiles of up to 24bpp instead of 16x16 8bpp.
AlgART Libraries is a collection of Java libraries, supporting generalized smart arrays and matrices with elements of any types, including a wide set of of 2D, 3D, and multidimensional image processing and other algorithms. Main features: 64-bit long int indexes, a memory model concept (allowing storing data in different schemes from RAM to mapped disk files), wide usage of lazy evaluations, built-in multi-threading optimization for multi-core processors, etc.