Firefox information and comparisons
| User Rating: | |
| Picture: |  |
| Website: | mozilla.org/firefox |
| License: | MPL 2.0 |
| Written in: | C/C++, JavaScript, CSS, XUL, XBL |
| Default search engine: | |
| Initial release: | September 23, 2002 |
| Open source: | Yes |
| Tab Groups: | Yes |
| Supports custom extensions: | Yes |
| Tabbed browsing: | Yes |
| Operating Systems: | Windows, OS X, GNU/Linux, Android, iOS, Firefox OS (Unofficial ports to BSDs, Solaris, OpenSolaris, illumos, IBM AIX, HP-UX, UnixWare) |
| Auto update: | Yes |
| Print preview: | Yes |
| Type: | Web browser, Feed reader, Mobile web browser |
| Developed by: | Mozilla |
| PDF viewer: | PDF viewer natively supported (without plugin); more features than Google Chrome such as thumbnails, page numbers, page navigation |
| Full screen mode: | Supported |
| Omnibox (search from URL bar): | Yes |
| Flash player: | Plugin available; not built-in |
| Inspect element option: | Yes |
| Freeware: | Yes |
| Latest release: | 74.0.1 2020-3-10 |
| Developer: | Mozilla Foundation and the open source community |
| Newest version: | 74.0 |
| Related software: | Firefox OS |
| Founder/Creator: | Blake Ross |
| CSS animated gradients in HTML: | Supported |
| Media codecs supported: | WebM, Ogg Theora Vorbis, Ogg Opus, MPEG H.264 (AAC or MP3), WAVE PCM |
| Available in: | 79 languages |
| Standard(s): | HTML5, CSS3, RSS, Atom, ES6 |
| Layout Engine: | Gecko, SpiderMonkey, WebKit (on iOS only) |
| Developer(s): | Mozilla Foundation |