alphacep/vosk-api: Offline speech recognition API for Android, iOS, Raspberry Pi and servers with Python, Java, C# and Node
"Vosk is an offline open source speech recognition toolkit. [...] Vosk models are small (50 Mb) but provide continuous large vocabulary transcription, zero-latency response with streaming API, reconfigurable vocabulary and speaker identification." Bindings for various languages, "scales from small devices like Raspberry Pi or Android smartphone to big clusters."