Picovoice/orca

Fast and local neural text-to-speech engine

Phonon TTS inference using xn

Lightning-Fast, On-Device TTS — running natively via ONNX.

A TTS that fits in your CPU (and pocket)

Maise is an open-source android speech engine designed to provide a powerful and flexible platform for speech sythesis on the edge.

Vui Nano — a small, context-aware text-to-speech model trained on real conversations. 219M active params (305M total), Apache 2.0, voice cloning, streaming, runs on CPU (dependency-free C build). Ships with a full real-time voice assistant: WebRTC, ASR, local LLM, OpenAI Realtime API compatible.

On-device TTS model by Neuphonic

Lightning-Fast, On-Device, Multilingual TTS — running natively via ONNX.

Private, offline AI Text-to-Speech for Android with Kokoro, KittenTTS, Pocket-tts and Piper models.