An open-source text-to-speech model and tool from Resemble AI, notable for zero-shot voice cloning from a short sample and control over emotional expression. MIT licensed, so it is one of the few cloning-capable options you can use commercially.
A fast, lightweight text-to-speech engine designed to run offline on low-resource hardware, right down to a Raspberry Pi. It is the default local voice for Home Assistant, with many voices across a range of languages.
An efficient C and C++ implementation of OpenAI's Whisper for local transcription, from the same lineage as llama.cpp. It runs Whisper well across CPU, NVIDIA, and Apple Silicon, which makes local speech-to-text practical on ordinary hardware.