AivisSpeech
AI & Generative AI
Free speech synthesis software that produces emotionally expressive voices, usable for video narration, voice dramas and similar.
Free planAIJapanese UI
AI & Generative AI: apps that support Japanese
7 apps
7 apps that APP NAVI confirmed from official sources to support Japanese. Last checked: 2026-11-05. Anything we could not confirm stays "Unverified"; we never guess. Prices and specs change, so check each app's official page before you use it.
AI & Generative AI — see all apps →
ChatdollKit
AI & Generative AI
A Unity SDK for turning a 3D model into a voice-enabled chatbot. It supports several LLMs such as ChatGPT, Claude and Gemini and speech synthesis such as VOICEVOX and AivisSpeech.
Free planAIJapanese UIIndie
COEIROINK
AI & Generative AI
A free speech synthesis app that reads text aloud in character voices. It is distributed for Windows, Mac and Linux, and lets users create their own voice with the MYCOEIROINK feature.
Japanese UI
Dify
AI & Generative AI
A platform for building agentic workflows, agents and knowledge pipelines on one canvas, deployable on cloud, in your VPC, or self-hosted.
Free planAIJapanese UI
sd-scripts
AI & Generative AI
A collection of training, generation and utility scripts for Stable Diffusion and other image generation models, covering LoRA training and fine-tuning. Japanese versions of the README and docs are provided.
Free planAIJapanese UIIndie
SHAREVOX
AI & Generative AI
A free text-to-speech app that uses deep-learning speech synthesis. The official site says users can adjust intonation and speed in detail and create a voice from their own recording.
Free planAIJapanese UI
Style-Bert-VITS2
AI & Generative AI
Text-to-speech software based on Bert-VITS2 that generates emotional speech, with controllable emotion and speaking styles.
AIJapanese UI