Right now I am playing With Oxite a Open source CMS made by Microsoft. This is an Alpha release and I must Admit, once i managed to build it (yes, the setup process needs some corrections, but the comments helps a lot with the process).
Once it has been compiled… works like a charm. It is a low end blog. It does not have any of the fancy or the minimum features yet (ie: No RSS/Atom, no anti-spam). The developers also say that is not production ready yet… but I saw some sites using it.
Adding this features seems quite easy since the plug-in/module model is very easy to understand and to code. Rumors say that the Beta version is very close… I’m very happy with this.
Nice code. A Big plus is that my preliminary analysis shows that the persistency layer (it uses a LinqToSql provider) seems quite easy to replace with a more malleable ORM.
In summary: this is a project that you must watch.