Been bouncing between ChatGPT, Gemini and Claude in a pile of browser tabs, so I gave AI-Browser a look. It's a desktop app by Jun Murakami that puts a bunch of AI chat services into one window with tabs. Ten of them at last count: ChatGPT, Gemini, Claude, DeepSeek, Kimi, Grok, Nani!?, Perplexity, Genspark and Sakana Chat.
The part I actually like is the editor. It's Monaco, the same engine VS Code uses, and you can split it up to five ways vertically. Type your prompt once, hit Send (or Ctrl+Enter) and it goes to whichever service tab you've got open. There's an All button that blasts the prompt to every active service at once, which is handy when you want to compare answers. It keeps a history of what you sent so you can pull old prompts back up.
It's clearly built with programmers in mind too. There's a built-in terminal, up to three instances, sitting right alongside the chat tabs, plus dark and light mode so it matches the rest of your setup. Current version is 1.7.1 and there are installers for Windows, Mac and Linux on the GitHub releases page. No price tag on it, just grab and run.
Product page: https://jun-murakami.web.app/apps/ai-browser