Trying to put together a comprehensive list of all .NET-based O/R mappers, because I get asked all the time. Sorry, but I'm not going to include any comparisons or analysis -- you're on your own.
- Codus (Free)
- Codesmith (Free/$)
- CSLA (Rocky Lhotka) (Free)
- DataObjects.NET ($$)
- Deklarit ($$)
- EntityBroker (Free/$$)
- Genome (Free/$$)
- Gentle.NET (Free)
- Ironspeed ($$)
- LLBLGen Pro ($)
- Modularis ($$$)
- Neo - .NET Entity Objects (Free)
- NHibernate (Free)
- NPersist (Free)
- NOrca (Free)
- ObjectMapper ($)
- Objectz.NET ($)
- OPF.NET ($$)
- ORM.NET (Free)
- RapTier (Free/$$)
- Sooda (Free)
- Visual Developer ($$/$$$)
- WilsonORMapper ($)
- XPO - Express Persistent Objects ($$)
Did I miss any?