Small library for parsing command line arguments in .net applications in extremely easy way, which can be even embedded to your application as source code (all the source code is in the one file). Using it is as simple as writing a method.

Powerful library for refactoring database using migration approach. Can be used as stand alone library for working with database schema, has nice fluent interface, can generate code for an existing db, dump data from tables to the sql script, can be used in any .net language, Migrations are written as regular .net code.