Oren mentions the release of Rhino Service Bus, which is a slimmer version of Mass Transit and NServiceBus:
"If you go through the code, you'll see that I liberally stole from both ideas and code from Mass Transit and NServiceBus. My main goal was to get to a level with no configuration, no complexity, high degree of flexibility from design stand point, but a very rigid structure for the users. Along the way I also took care to try to build into this support for some concepts that I think are interesting (message interception, taking advantage of features in MSMQ 4.0, message modules, etc)."
Oren mentions the highlights as:
- C# 3.0 & MSMQ 4.0 - taking advantage of features such as sub queues, async queue receiving.
- Pluggable internal architecture.
- Minimal moving parts, strongly opinionated.
- Hard focus on developer productivity and ease of use.
- Conventions, assertions and convictions.
You can read more from Oren here as well as check out the code.