TabbitSidebar extension
Adds a chat panel to Chrome, Edge, or Safari. Fast to install, but context is usually limited to the current page or whatever you paste.
- —Limited context depth
- —Manual copy/paste workflows
- —No cross-tab automation
AI-NATIVE BROWSER
Browser with AI Sidebar — Work Without Switching Tabs
Most “AI sidebars” are chat panels bolted onto a classic browser. Tabbit turns the sidebar into a workspace: vertical tabs, multi-model chat, and an Agent that can read, compare, and act across every open page.
Three lanes in the SERP
Not every AI sidebar is built the same
Search results mix three very different products. Knowing which lane you are in saves you from buying the wrong tool.
Browser-bundled AI
Opera Aria, Firefox chatbot, Brave Leo. The AI is built in, but it still sits beside a conventional tab bar and relies on productized shortcuts.
- —Tight to one browser engine
- —Limited agentic execution
- —Few workspace primitives
AI-native workspace
Tabbit rethinks the browser around AI: vertical tabs, an omnibox that sees your whole workspace, and Agent mode that executes tasks across tabs.
- —Newer product, still in beta
- —Best on macOS 12+ and Windows 10/11
What the sidebar can do
Tabbit’s AI sidebar is the command center
Instead of a detached chat rail, Tabbit’s sidebar is wired into tabs, files, and actions.
Omnibox with context
Type a URL, ask a question, or give an agent instruction in one box. Press @ to reference the current tab, a tab group, a screenshot, or a local file.
Vertical tabs + smart groups
See full page titles in a clean vertical sidebar. Tabbit auto-groups tabs into workspaces so research, writing, and monitoring stay separate.
Agent mode
Tell Tabbit to fill forms, compare prices, summarize papers, or run a multi-step workflow. It executes in its own tab group while you keep working.
Skills marketplace
Save prompts and automations as reusable Skills, or pick one from the community Skills Plaza to instantly upgrade your sidebar.
Decision matrix
How the leading AI sidebar browsers compare
If your work spans multiple tabs and ends in a deliverable, context depth and automation matter more than a fancy chat UI.
| Capability | Opera | Firefox | Sider | Tabbit |
|---|---|---|---|---|
| Built-in sidebar | Yes — Aria | Yes — AI chatbot | Extension panel | Yes — workspace-native |
| Multi-model support | Aria + ChatGPT + Gemini | Multiple providers | Multiple providers | GPT / Claude / Gemini + domestic models |
| Cross-tab context | Limited | Limited | Mostly current page | Tab groups, files, screenshots via @ |
| Agentic execution | No | No | No | Yes — fills forms, clicks, reports |
| Workspace automation | No | No | No | Skills + Agent mode |
Built for heavy users
What an AI sidebar browser should actually deliver
Tabbit is designed for people whose browser is their desk: researchers, writers, analysts, and operators.
Deep research
Open 20 sources, group them by topic, and ask Tabbit to synthesize conflicting claims into a structured report with citations.
Content creation
Reference drafts, PDFs, and competitor pages from the sidebar without leaving your writing tab.
Workflow automation
Let Agent mode move data between internal tools, fill repetitive forms, and notify you when a long-running task is done.
FAQ
Common questions about browsers with AI sidebars
What is a browser with an AI sidebar?+
It is a browser that includes a persistent side panel for AI chat, summaries, or actions—so you do not have to switch to a separate app or copy text back and forth.
Is an AI sidebar better than a browser extension?+
A built-in sidebar is usually faster, more integrated, and has deeper context. Extensions can be cheaper to start but often limit context to the current page.
Which browser has the best AI sidebar?+
For chat and quick answers, Opera and Firefox are solid. For research, automation, and cross-tab context, Tabbit’s AI-native workspace is the stronger choice.
Can Tabbit’s sidebar automate tasks?+
Yes. Tabbit Agent mode can read pages, fill forms, click buttons, and run multi-step workflows in a separate tab group while you continue browsing.
Does Tabbit support multiple AI models?+
Yes. International builds include GPT-5.2, Claude Sonnet 4.6, and Gemini 3.1 Pro. Domestic builds include DeepSeek, GLM, Kimi, Qwen, Doubao, MiniMax, and LongCat.
Is Tabbit free to download?+
Yes, Tabbit is in free public beta for macOS and Windows. Visit the official site for the latest installer and regional edition.
How is Tabbit different from Arc or Dia?+
Like Arc, Tabbit uses a vertical sidebar and workspaces. Unlike Arc or Dia, Tabbit adds Agent mode, a unified omnibox, and a Skills system for real automation.
Can I import my bookmarks and passwords?+
Yes. Tabbit supports one-click import from Chrome, Edge, Safari, and other major browsers.
Stop copying text into chat windows
Get a browser whose sidebar already knows what you are working on.