iCommune is an application that extends Apple's iTunes to share music over the network. It allows you to share the music in your iTunes library and access other iCommune music collections. iCommune music collections appear as playlists in your iTunes window. You can browse through them, and choose to stream or download the music they contain.
log4net is a tool to help the programmer output log statements to a variety of output targets. log4net is a port of the excellent log4j framework to the .NET runtime. log4net runs on the following frameworks: Microsoft .Net Framework 1.0, Microsoft .Net Framework 1.1, Microsoft .Net Compact Framework 1.0, Mono 0.23, Microsoft Shared Source CLI 1.0.
Grammatica is a parser generator (compiler compiler) for C# and Java. It improves upon similar tools (like yacc and ANTLR) by creating well-commented and readable source code, by having automatic error recovery and detailed error messages, and by support for testing and debugging grammars without generating source code. Grammatica supports LL(k) grammars with an unlimited number of look-ahead tokens.