PicoStorage allows you to store hierarhical information (similar to "files and directories") inside a single file. The functionality offered is largely equivalent to the one offered by any filesystem, or by the Structured Storage and Compound Files.
PicoStorage can efficiently handle huge numbers of small files, with very economical disk usage; it also allows you to keep open (in RAM) simultaneously a large number of files. Transaction support guarantees data integrity. Learn more about the distinctive advantages of PicoStorage. or look at the benchmark.
The library is available on a dual-license basis: under GPL for free, and under a commercial license for use in closed-source applications.
