AppRecon is small java tool that tries to identify applications by sending appropriate discovery broadcast packets. It currently finds PcDUO, SQL servers, and PCAnywhere. Source version.
You can download it from the following link: https://packetstormsecurity.com/files/download/35038/apprecon_src_1_0_0.zip
Source: https://packetstormsecurity.com/files/35038/apprecon_src_1_0_0.zip.html