I'm the chap who wrote all of these tools we have over at ACG. There are a number:
GC3D - Ground control software that has clumping, lag and obfuscation for inbound raids, configurable radar distances (server side), somewhat nasty TS integration via virtual keys etc..
WebRadar - cut down 2D version of the above available on our website (http://www.aircombatgroup.co.uk/radar/radar.php) it's up whenever our server is up (which is most of the time, but I admit it falls over occasionally)
GCV - Poor man's tacview. I dump XYZ coords from our server on a per-second basis, turn them into a sensible timeseries and use that data to allow viewers to replay the mission form an "eye-in-the-sky" type persepctive. Sadly, I couldn't get pitch/roll/yaw out, trigger events etc... hence why it's "poor man's" tacview. Still pretty cool for watching your dogfights though.
A web based tool that is an FMB-lite allowing you to create, plot and commit LW bomber raids to attack targets in England.
SpawnStar - Same as the web tool, really, except in c#, not web-based and with the ability for us to despawn aircraft if needed.
We have never purposefully kept them from the community, and indeed as others said we shared GC3D with SOW back in the day (I actually made a custom version for them to integrate into their systems). Could they be modded for SP? Some of them could fairly easily (with some caveats). It's really just a question of time (I don't have a lot of it) and inclination (I don't play SP so I wouldn't personally get much out of it).