MoltBrowser vs Rotunda
MoltBrowser
geneye.aiRotunda
rotunda.shSide by side
| Figure | MoltBrowser | Rotunda |
|---|---|---|
| Price from | Free | — |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | — |
| Plans published | 1 | 0 |
| Spec score · AI Browsers | 8.0 (#10) | 6.6 (#23) |
| License | The GitHub README identifies the source code license as GPLv3. | The site identifies Rotunda as open source under the MPL-2.0 license. |
| Product | MoltBrowser is an open-source AI browser with an embedded on-device model and built-in privacy features. | Rotunda describes itself as an agent-first browser forked from Firefox for agents running locally on a user's laptop and home network. |
Plans
In their own words
MoltBrowser
MoltBrowser is a free, open-source AI browser with an embedded on-device model and privacy features. Its page-aware AI can summarize articles, explain code, extract table data, and translate pages. It runs open models such as Llama, Mistral, Phi, and Qwen locally; the project also documents using personal keys with OpenAI, Anthropic, Gemini, and compatible endpoints. Its agent can click, scroll, navigate, and fill forms, and tasks can be scheduled to run automatically. Browsing memory and AI conversations are stored on the device; conversation history can be searched, exchanged as JSON, or wiped in one action. MoltNet routes traffic over Tor and allows exit-country selection, while MoltShield blocks ads and trackers, including YouTube ads, and dismisses cookie banners. The maker says the browser alters device fingerprint signals and masks the user's IP address. Builds are listed for Apple Silicon macOS, Windows 10/11 x64, and Linux x64. Chrome extension compatibility is advertised. iOS and Android are listed as in development, not as available builds.