KittenTTS is listed under AI Voice & Speech, in the Content & Media Generation category on Flocci AI Tools. Ultra-small (tens of MB) Apache-2.0 TTS models that run on CPU. It is free, with no paid plan attached, and it lives at github.com.
KittenTTS is listed as fully free — there is no paid tier attached to it in the catalog. That makes it one of the 397 entries on Flocci AI Tools with no upgrade path built in.
KittenTTS needs to be installed or self-hosted — it doesn't run in a browser tab. It is available on self-hosting, the command line and an API.
KittenTTS does 3 things the catalog singles out: Ultra-small (tens of mb) apache-2.0 tts models that run on cpu; multiple built-in voices, fast inference without a gpu; good for embedded and offline apps.
Copilot Audio Expressions is the closest free alternative: it sits in the same AI Voice & Speech sub-category and is free. Kokoro Web, Zonos and Chatterbox (Resemble AI) also start free. The full list is on the alternatives page.
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