Ladybird vs Mozilla Firefox
Ladybird
ladybird.org
Mozilla Firefox
firefox.comSide by side
| Figure | Ladybird | Mozilla Firefox |
|---|---|---|
| Price from | — | Free |
| Free plan | — | Yes |
| Free trial | — | — |
| Open source | Yes | Yes |
| Web | — | Yes |
| Windows | — | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| Plans published | 0 | 1 |
| Spec score · Web browsers | 7.3 (#136) | 9.0 (#11) |
| Browser engine | other | gecko |
| Built-in ad blocking | Yes | Yes |
| Founded | 2024 | 2004 |
| Free plan | Yes | Yes |
| Open source | Ladybird is open source, and the project provides instructions for cloning and running it locally. | Yes |
| Supported platforms | both | both |
| Privacy | Ladybird says it does not monetize users and reports that private browsing routes cookies, storage, history, caches, downloads, and address bar suggestions by privacy. | Firefox's privacy notice says browsing history, form data, temporary files and cookies are processed on the device unless the notice says otherwise. |
| Product | Ladybird is an independent web browser with a new engine built from scratch and based on web standards. | Firefox is a web browser that Mozilla describes as fast, private and useful across devices. |
| Security | The project describes process isolation, validation of messages from renderers, and restricted system access for processes as parts of its security model. | Firefox uses Google Safe Browsing to protect against malicious downloads and phishing attacks, and validates web pages and technical data with certificate authorities. |
| Support | The project invites bug reports, website testing, security reports, and technical feedback, and links to a Discord community chat. | Mozilla provides Firefox help resources for desktop, enterprise, Android and iOS. |
Plans
In their own words
Mozilla Firefox
Mozilla Firefox is a free, open-source web browser that uses the Gecko engine. It is available on Windows, macOS, Linux, iOS, Android, and as a browser extension, and its download page lists availability in more than 90 languages. Standard tracking protection and built-in ad blocking are included. Total Cookie Protection isolates cookies so they cannot follow users between websites, while Tab Groups organize open tabs by project, mood, or task. A Mozilla account can sync bookmarks, passwords, and open tabs across devices. Firefox also offers access to multiple AI chatbots in one place, letting users choose whether to use them. Thousands of free extensions are available through addons.mozilla.org. Mozilla’s privacy notice says browsing history, form data, temporary files, and cookies are processed on the device unless stated otherwise. Automated translation and PDF alt-text suggestions use downloaded language models locally; Firefox says those features do not send page content, PDFs, images, or tab URLs to Mozilla. Firefox is listed at free.