libsigrok unreleased development snapshot
sigrok hardware access and backend library
The sigrok project aims at creating a portable, cross-platform, Free/Libre/Open-Source signal analysis software suite that supports various device types (such as logic analyzers, oscilloscopes, multimeters, and more).
See the "Modules" page for an introduction to various libsigrok related topics and the detailed API documentation of the respective functions.
You can also browse the API documentation by file, or review all data structures.
There is one mailing list for sigrok/libsigrok: sigrok-devel.
You can find the sigrok developers in the #sigrok IRC channel on Freenode.