I'd like to share my newest project: Helios Laser DAC. It's an USB to ILDA DAC, with fully open source hardware and software. It's low cost but still powerful with good specs: 12bit XY channels, 8bit RGBI channels, up to 65+ kpps, up to 4000+ max points in frames, plug and play automatic driver installation, aluminium enclosure etc.http://pages.bitlasers.com/helios/
I've prepared a batch and will be selling them for $79.90 each. I think that makes it the cheapest full color ILDA DAC available right now. Even cheaper than a sound card and correction amp! I'm hardly making money on these really
It currently supports LasershowGen natively of course, but the drivers are built to be compatible with cfavreau's Open Laser Show Controller API, so by renaming and replacing a DLL file, it is already supported by several third party programs, including Dr Lava's LaserShow Xpress (actually I have only tested it with ILD SOS because I don't own LSX but I believe they use the same device interfacing system, right?).
I will be contacting various other developers soon too, in hope that it will be supported by even more software. If you're a developer reading this, post in this thread or PM me if you are interested, or just go straight to the github repo: https://github.com/Grix/helios_dac
The device uses the open source libusb library for USB connectivity, which supports many platforms including Mac and Linux. I haven't built binaries for these environments yet, only windows, but I will soon, if no one else does first.