JCA compliant connectors for the Berkeley Database system.
JApprDB is a database engine able to store knowledge by means of semantic networks, representing semantic relations between the concepts. Databases are supposed to be queried by Lojban - a syntactically unambiguous language based on predicate logic.
This is an easy to use and extensible rules engine written in C# for .NET and Mono.
NovaDB is a cloud computing platform initially designed for equity trending and analysis. NovaDB is designed to handle static or real time streaming data (so you don't have to process all your aggregates on batch jobs or by hand).
PicoStorage, a lightweight "filesystem in a file" (Structure Storage) library, features efficient and compact storage of both tiny and large files and directories, compression, and transactions. It is highly scalable, simple and easy to use.
PlutoStatus is a system to publish the current status of your systems. It includes mirroring.
Sprawler is the first Open Source internet search engine software and service - built by the community, for the community. It will address the various reasons most search engines today still are far from being where they need to be.
Providing a Web based console to manage a remote machine: copy/paste, execute commands, edit files, exectue SQL statement, provide AJAX based look and feel, and more...