Hello gentlemen,
I hacked sdr++ to add native support for HL2, also few core improvements, such as
1) scroll wheel for sliders
2) zoomed UI (menu/font can be made bigger)
3) squelch changed to not turn off the sound immediately (avoids tiny breaks)
The software is the receive-only frontend for popular boards. I like it more than other software, so I decided to make small contribution.
I'm planning to hack on, please provide your feedback. Current state is alpha (has some bugs, feature incomplete - eg passband filter control). If I'll have enough courage, I'm going to add ssb transmit at least.
have sun!