- ironrubymvc 38 Write ASP.NET MVC application in Ruby
- riker 27 Heroku-like deployment for Amazon Web Services
- silverline 18 Plugin for running Ruby in the browser seamlessly from Rails, and display either HTML or vector graphics
- iron 16 [Jimmy Schementi's development fork] Implementations of Python and Ruby programming languages for .NET Framework that are built on top of the Dynamic Language Runtime.
- activerecord-mssql-adapter 14 ActiveRecord SQL Server Adapter