I am looking for a server technology that supports AMF (because I plan on using an as3/flash front end).
I would like to develop game logic / simulations that run on the server. Small number of users and logic at first, but that will grow.
I might use this for some simple turn based / simple tests, but I am hoping this will also support some tougher real time (RTS) or even MMO style games and simulations.
So far I have been looking at (in order of what I think is most promising so far):
WebORB - Looks the most promising so far, appears to be well supported and developed, lots of features, yet sells itself as easy. Looks like they have a community open source/free version
Cubeia Firebase - Looks really good, only thing that worries me is their statement that it does not work well for real time style games, but is ideal for turn-based. It might be ok for now, but what if I need to scale the game up? Open Source/Free
BlazeDS - Looks promising, supported by adobe, I should be able to develop game logic in the BlazeDS server and has amf support. Open Source/Free
Red5 - No release since 2010, some activity though. (has amf) Open Source/Free - however have not been able to locate any good 'game' examples / tutorials.
FlashMOG - looks interesting, but I am not sure if it is robust enough to act as an actual game server with continuously running logic. No release since 2010, Uses PHP as a socket server. Open Source/Free
RedDwarf (used to be SGS/Project Darkstar) -- no release since 2010, is this active? Has AS3 library, but it is out of date too? Open Source/Free
Cirrus, Wowza, FMS - these are more of a media server?
SmartFox, Electroserver - these are nice, but are not open source/free. I believe they have limited connection versions available and while I am hoping to scale my project above those limitations I do not expect to be drawing an income to pay for the licenses at that point
LCDS (live cycle data services) - similar to blazeDS, not free
Any other options or clarifications??