erikej 

.NET Library for loading data fast (doing bulk inserts) into a SQL Server Compact database file. Attempts to mimic the SqlClient SqlBulkCopy API.

ELMAH with configuration for getting started quickly on a Microsoft SQL Server Compact database as the error log.

**Unofficial** Enable SQL Server Compact 4.0 private desktop deployment with Entity Framework 6.1.x, see the blog post at http://erikej.blogspot.dk/2014/10/entity-framework-6-and-sql-server.html for details. To... More information

T-SQL Code Analyzer for Visual Studio 2015 CTP6 - alpha version, limited functionality

For SQL Server Compact, for easy inclusion of database scripting in your own application

ASP.NET Membership and Role Provider that uses SQL Server Compact 4.0 as data store. Version 2.1 adds a ProfileProvider, and includes a number of bug fixes and 2 additional methods.

For SQL Server Compact 3.5 SP2, for easy inclusion of Merge Replication support in your own application. Requires SQL Server Compact 3.5 SP2 runtime installed. See project site for samples and documentation.