As part of an article I’m writing, I’m researching a bit into WS-ReliableMessaging. As part of this, I’m looking for implementations. This is what I have found so far:

• Systinet WASP 5.0 (Beta, expect this link to become stale soon)
• Apache WS-FX Sandesha
• IBM Emerging Technologies Toolkit (ETTK)

Interestingly enough (for me, at least), Microsoft doesn’t yet support WS-ReliableMessaging in WSE 2.0, although support for WS-Addressing is included.

Any pointers to implementations I might have missed are welcome!