CrossConnect has had an older version as open-source but now all versions of CrossConnect are open source. You can get the code at http://code.google.com/p/cross-connect/
There is a goldmine of code here in cross-connect.
- A “Full Text Indexer” FTI that works in the extremely restrictive Windows phone and windows metro environments.
- Various hard to find functionality like color pickers, date pickers, etc.
- The only C# sword (crosswire.org) file readers.