Jasper - Jasper is an open source platform for developing always-on, voice-controlled applications.
Snowboy - Snowboy is a customized hotword and wake word detection toolkit that recognizes your voice, runs in real time and on Raspberry Pi.
Deepgram - Search engine for speech
Cassette - Transcribe, record & share conversations
CMU Sphinx - CMU Sphinx is a speaker-independent large vocabulary continuous speech recognizer released under...
Speechmatics - The most accurate and inclusive speech-to-text API ever released.