hlipka made a logic analyzer with 2 oscilloscope channels that uses a Cypress PSoC chip. It works with SUMP clients like Open Logic Sniffer.
Goal of this project is to develop a combination of 2-channel oscilloscope with a 32-channel logic analyzer. Sample speed will be 1 Msps, with a depth of 6k samples (when using one analog and 16 digital channels, depth can be doubled). Since it only needs to use a single PSoC chip, it can be made with relatively low cost, and can be made really small.
The latest files are linked in the forum.