I notice several well-known projects in java that were ported to C# .NET. Some examples:
- Hibernate -> NHibernate
- JUnit --> NUnit
- Ant --> NAnt
- Lucene --> Lucene.Net, NLucene
- iText --> iTextSharp
- log4j --> log4net
- Quartz --> Quartz.NET
I was curious about the reverse situation: what are the notable .NET projects that have been ported to the java world?
I looked at the list of projects at http://csharp-source.net but didn't see any obvious ones.