Dia
7.9#18 in web browsersFrom $20 a monthFree planmacOS
VisitDia vs Rotunda
What both publish
| Fact | Dia | Rotunda |
|---|---|---|
| Integrations | The plans page lists Slack, Gmail, Notion, Microsoft Outlook, GitHub, Google Calendar, and Figma; the September 24, 2026 release notes say Dia connects to Figma tools. | The site says Rotunda works with the local-first OpenClaw and Hermes agents and with Playwright. |
| Open source | No | Rotunda’s site identifies the project as open source under the MPL-2.0 license. |
| Product | Dia is an AI web browser with an assistant for questions and requests about the current page, other tabs, selected text, and browsing history. | Rotunda describes itself as an agent-first browser forked from Firefox for agents running locally on a user's laptop and home network. |
| Support | Dia directs users with questions to [email protected]. | For suspected fingerprinting issues, the site instructs users to enable ROTUNDA_DEBUG_DUMP and file an issue with the dump. |
Dia plans
- Better BrowserFree
- Better Answers$20 a month
- Better Days$100 a month
Rotunda plans
No prices published.
Pick Dia if…
Dia suits macOS users who want browser organization, sync, and optional AI assistance. Its separate profiles may help people keeping work, freelance, and personal browsing apart.
Pick Rotunda if…
Rotunda suits developers building a personal browser agent that acts through a residential network. It fits users who want local storage, Playwright support, and command-line browser controls.