R:COM by Blue Tree Systems - supporting J1939, J1708, and the CAN version of OBD (ISO 15765-4), but maybe not ISO 9141 or J1850 (source: LinkedIn Telematics Group)
eFleet Services - support J1708 and OBD/OBD2, and have done some work on Canbus integration (source: LinkedIn Telematics Group)
CalAmp , with LMU-4200 Series - supports both J1939 and J1708 (source: LinkedIn Telematics Group)
IRIS Technologies - they are SAE registered and approved for J1939 and J1708 and can be used to selectively log individual CAN messages (source: LinkedIn Telematics Group)