Can't comment on the CCG, but there's tons of web stuff out for AOG's defunct B5 Wars game. Of course, Mongoose has a vibrant, living game in ACTA, but the scales are a little different. I wouldn't put B5 Wars quite at the SFB, plot out all your energy and movement complexity level (or like SITS, a 3D sim for the Honor Harrington universe), but it's fairly up there. ACTA is more like Battlefleet Gothic, in that it's really oriented toward task forces and small fleets of ships. B5 Wars was more oriented toward small groups of ships, maybe 2-4 per side. You got a lot more detail than ACTA, but at the cost of playability and time.
That being said, the moderate to high complexity of the game meant there was a ton you could do with it.
There's the B5Wars.net forums that are a bit spotty these days but normally up. The downloads section includes the Rise of the Narn Regime supplement that was going to be published by AOG before the lost the license, and a Variants supplement with dozens of new ships.
Planetside.firenebula.com has tons of new content for B5 Wars, including about 40 issues of the fan mags The Great Machine and Babcomm. There's also several new fan supplements, and conversions for Star Trek, Star Wars, Dune, and Escalation Wars which probably have 500+ ships for.
Follow the links page to tons of other sites, including conversions for Andromeda, Battlestar Galactica, Farscape, Robotech, Wing Commander, Descent, and lots of others. Plus of course lot more B5 content.
I've got a yahoo web group that I occassionally post new ships on, lately working on conversions for Battletech, Battlefleet Gothic, Buck Rogers and a few others. http://games.groups.yahoo.com/group/b5wcrossovers/
And www.richbax.com has some great unpublished material from a game design group that was working with AOG. He's moved on now to do design work with Mongoose for ACTA. But his old B5 War's site is still a rare treat.
There's one gentleman that categorized all the downloads available for B5 Wars in one spot, but I don't have that bookmark on this machine unfortunately. I'll see if I can track it down for you.
Personally I'd love to play out a campaign some day with Victory By Any Means as the campaign rules (another product originally going to be released by AOG that fell by the wayside, but now produced by Jay Wasachak and Tyrel Lohr as a generic scifi campaign system), ACTA as the fleet simulator, and B5 Wars resolving any small combats.
