Homestead is a RESTful CRUD server built using C++ on top of Cassandra. It is designed to be easily extensible and makes some assumptions about how you'll want to store your data in Cassandra.
Project Clearwater is an open-source IMS core, developed by Metaswitch Networks and released under the GNU GPLv3. You can find more information about it on our website or our wiki.
Homestead is an HSS-cache. See the documentation below for more information.