Ikoru is a platform for collaborative tagging Web applications. It has an embedded Soap/HTTP server (C++) and an user interface (AJAX). It evolved out of a study on Emergent Semantics and received funding from the EU IST project TAGora.
Krang is an open source CMS, particularly well suited for high-volume magazine-style web sites. Originally developed in 2003 by Primedia, Krang is used by many well-known web sites including New York Magazine, Motor Trend, and Soap Opera Digest.
X-Soap is an API for XOOPS, it support a SOAP XML Transport Layer, it allows for access to functions on your xoops systems with 3rd parties based on the user base, currently with a range of plugin for database maintenance.