Jasper - Jasper is an open source platform for developing always-on, voice-controlled applications.
Pullstring - Powering computer conversation across all platforms.
OpenJarvis - OpenJarvis is a lightweight configurable multi-lang bot.
ChatterOn for Messenger - Build Facebook chat-bots in under 5 minutes
kalliope - Kalliope is a modular always-on voice controlled personal assistant designed for home automation.
ChatBot - Easy to use chatbot platform for business