GP Dev

4 listings we've seen · as of 4 Oct 2026. This is the maker name shown on the store, not proof of who owns the company.

Social Networking

Display YouTube Live chat over the video with danmaku-style Nico, speech-bubble POP, and chat-panel-style Classic themes.

Entertainment

Shows the live viewer count and elapsed live time on YouTube live streams.

Social Networking

StreamBubbles Overlay for Twitch chat with Nico, POP, and Classic themes.

Functionality & UI

ChatGPT extension that adds color marks, highlights, and short labels to your ChatGPT chat list.