Softfocus BTree/ISAM v3.1
I have been using this product for over five years. I would recommend it to any developer who needs database management without the overhead of a RDBMS. This product is lean, fast and does not require a lot of disk space. You, as the developer, have complete control of your database management application. This product is easy to port (recompile), and the manual provides complete information. Also, no license is needed to distribute your application. The best thing about Softfocus BTree is that, like Linux, source code is included.