Voicebox is a voice studio that clones a voice from a few seconds of audio and then speaks any script in it, all on hardware you control. Eight speech engines cover multilingual cloning, preset voices, voices described in plain words, and expressive tags like laughs and sighs, across 23 languages. Long scripts are split at sentence boundaries and crossfaded, so chapters and articles render in one pass. A post-processing rack adds pitch shift, reverb, delay, chorus, compression, and filters, with presets like Robotic and Radio. The Stories editor lays voices on a multi-track timeline for podcasts and dialogues, then exports the mix. Voice profiles can be recorded in the app, imported, exported, and given personas that a bundled local language model uses to compose, rewrite, or respond. Global dictation turns a held hotkey into transcribed text with optional cleanup of filler words. A built-in MCP server and REST API let coding agents call a single speak tool and talk back in a cloned voice. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.