Updated at: May 6, 2026
This is the list of web browsers that we don't yet know which rendering engine is in use. In some cases the makers of a web browser don't really announce which engine their browser uses; these are browsers that we haven't confirmed which engine they use. If you have any information about these browsers, please let us know.
| Browser Name | Rendering Engine | Timeline | Device Type | Operating Systems | Status |
|---|---|---|---|---|---|
| ActivatorDesk | Unknown | 2000 - ? | Desktop | Windows | Discontinued |
| Adapt | Unknown | Unknown | Desktop | Windows | |
| ArcWeb | Unknown | 2000 - ? | Discontinued | ||
| Argus Browser | Unknown | 2026 → | Desktop | macOS | |
| ArtisBrowser | Unknown | 2011 - 2025 | Desktop & Mobile | Android, iOS, macOS, Windows | |
| Browse-It | Unknown | 2000 - 2002 | Mobile | Palm OS | Discontinued |
| Bunjalloo | Unknown | 2008 → | Game Console | Game Console | Active |
| Cake Browser | Unknown | 2017 - 2022 | Mobile | Android, iOS | Discontinued |
| Chameleon Browser | Unknown | ? - 1999 | Desktop | Windows | Discontinued |
| Cheetah | Unknown | 2001 | Desktop | Linux, Unix-like | Discontinued |
| Chimera | Unknown | 1997 | Desktop | Unix-like | Discontinued |
| Cineast | Unknown | Unknown | Desktop | Linux, Unix-like, Solaris, HP-UX | Discontinued |
| Cronos | Unknown | Unknown | Desktop & Mobile | iOS, Windows | |
| Crystal Atari Browser | Unknown | Unknown | Desktop | Atari | Discontinued |
| Deepfish | Unknown | 2007 - 2008 | Mobile | Windows Mobile | Discontinued |
| EGBrowser | Unknown | Unknown | Game Console | Game Console | Discontinued |
| EudoraWeb | Unknown | Unknown | Mobile | Palm OS | Discontinued |
| eWorld Browser | Unknown | 1994 - 1996 | Desktop | Mac OS Classic | Discontinued |
| Fellou | Unknown | 2024 → | Desktop | macOS, Windows | Active |
|
Firefox Lite
Formerly Firefox Rocket
|
Unknown | 2017 - 2019 | |||
| Fizzilla | Unknown | 1999 - 2002 | Desktop | OS X | Discontinued |
| Freedom | Unknown | Unknown | Desktop & Mobile | Android, iOS, macOS, Windows | |
| Gener8 Browser | Unknown | 2021 → | Desktop & Mobile | Android, iOS, macOS, Windows | Active |
| Genspark AI Browser | Unknown | 2023 → | Desktop | macOS, Windows | |
| Ghost Browser | Unknown | Unknown | Desktop | Linux, macOS, Windows | |
| Ghostery Browser | Unknown | 2023 - 2025 | Desktop | Windows | Discontinued |
| Guardian Browser | Unknown | Unknown | Desktop | macOS, Windows | |
| Horse Browser | Unknown | 2022 → | Desktop | Linux, macOS, Windows | Active |
| HotJava | Unknown | 1997 - 2004 | Desktop | Linux, Windows, Mac OS Classic | |
| Huawei Browser | Unknown | Unknown | Desktop | Windows | Active |
| InBrowser | Unknown | ? - 2023 | Mobile | Android, iOS | Abandoned |
| InternetWorks | Unknown | 1994 - ? | Desktop | Windows | Discontinued |
| iPanel Microbrowser | Unknown | Unknown | Discontinued | ||
| Jazilla | Unknown | 1999 - 2000 | Desktop | Java Platform | Discontinued |
|
JosBrowser
Formerly JoZilla
|
Unknown | 1998 - 2001 | Desktop | Java Platform | Discontinued |
| Ka Ko'okele | Unknown | 1998 - 2006 | Desktop | Mac OS Classic | Discontinued |
| KidZui | Unknown | 2006 - 2014 | Desktop & Mobile | iOS, macOS, Windows | Discontinued |
| Kingpin Browser | Unknown | 2019 - ? | Desktop | macOS, Windows | Discontinued |
| Linken Sphere | Unknown | 2017 → | Desktop | macOS, Windows | |
| Links (Atari) | Unknown | Unknown | Desktop | Atari | Discontinued |
| LT Browser | Unknown | 2020 → | Desktop | Linux, macOS, Windows | |
| LunaSuite | Unknown | 2001 - 2002 | Mobile | Apple Newton | Discontinued |
| Mercury | Unknown | 2012 - 2015 | Mobile | Android, iOS | Discontinued |
| MMM | Unknown | 1997 - 1998 | Desktop | Unix-like | Discontinued |
| Multiweb | Unknown | 2000 | Desktop | Windows | Discontinued |
| Mycel | Unknown | Unknown | Desktop | Unix-like, Plan 9 | |
| Naked Browser Pro | Unknown | 2012 - 2016 | Mobile | Android | Abandoned |
| Net-Tamer | Unknown | Unknown | Desktop & Mobile | Windows, Misc Mobile OS | Discontinued |
| NetClue | Unknown | Unknown | Desktop | Java Platform | |
| Netcomber | Unknown | 1995 | Desktop | OS2 | Discontinued |
| NetCruiser | Unknown | 1995 - 1998 | Desktop | Windows | Discontinued |
| NetFront | Unknown | 1995 → | Mobile | Misc Mobile OS | |
| Netomat | Unknown | 1999 - 2001 | Desktop | Linux, Windows | Discontinued |
| NetShark | Unknown | Unknown | Desktop | Mac OS Classic | |
| NewtScape | Unknown | 1997 - 2001 | Mobile | Apple Newton | Discontinued |
| Nintendo 3DS Browser | Unknown | 2011 - 2020 | Game Console | Game Console | Discontinued |
| Nintendo Wii U Browser | Unknown | 2012 - ? | Game Console | Game Console | Discontinued |
| Norton Neo | Unknown | 2025 → | Desktop | macOS, Windows | Active |
|
OpenWave
Formerly UP.Browser
|
Unknown | Unknown | Mobile | Misc Mobile OS | |
| Opera Coast | Unknown | 2013 - 2017 | Mobile | iOS | Discontinued |
| Oregan | Unknown | Unknown | Game Console | Game Console | |
|
Orions Browser
Formerly Monument Browser
|
Unknown | Unknown | Desktop | Windows | Discontinued |
| Ortix | Unknown | 2025 → | Desktop | macOS | Active |
| Osiris Browser | Unknown | Unknown | Desktop | Windows | Discontinued |
| Palmscape | Unknown | 2002 - 2005 | Mobile | Palm OS | Discontinued |
| Pathworks Mosaic | Unknown | ? - 1994 | Desktop | Unix-like, Windows | Discontinued |
| Phoenix | Unknown | 1993 - 1995 | Desktop | Linux, Windows, MS-DOS | Discontinued |
| PlayStation Portable | Unknown | 2004 - 2015 | Game Console | Game Console | Discontinued |
| PlayStation Vita Browser | Unknown | Unknown | Game Console | Game Console | |
|
PocketWeb
Formerly NewtonWWW
|
Unknown | Unknown | Mobile | Apple Newton | |
| Polarity | Unknown | 2011 - ? | Desktop & Mobile | Android, Windows | Abandoned |
| Power Browser | Unknown | Unknown | Desktop & Mobile | Android, macOS, Windows | Discontinued |
| Privacy Browser | Unknown | Unknown | Desktop & Mobile | Android, Linux | Idle |
| ProxiWeb | Unknown | ? - 2000 | Mobile | Windows CE, Palm OS | Discontinued |
| Puma Browser | Unknown | Unknown | Mobile | Android, iOS | |
| Shift Browser | Unknown | Unknown | Desktop | macOS, Windows | |
| Sidekick | Unknown | 2020 - 2024 | Desktop | Linux, macOS, Windows | Discontinued |
| sielo | Unknown | 2016 - 2019 | Desktop | Linux, macOS, Windows | |
| Skweezer | Unknown | 2003 - 2008 | Mobile | Misc Mobile OS | Discontinued |
| SlashB | Unknown | 2020 - ? | Desktop | Linux, macOS, Windows | Discontinued |
| Sogou Explorer | Unknown | Unknown | Desktop | Windows | |
| SPRY Mosaic | Unknown | Unknown | Discontinued | ||
| Spyglass Mosaic | Unknown | Unknown | |||
| Tango | Unknown | 1995 - 1999 | Discontinued | ||
| TeaShark | Unknown | 2007 - 2009 | Mobile | Misc Mobile OS | Discontinued |
| The Light of Adamas | Unknown | ? - 2001 | Desktop | Atari | Discontinued |
| The Web Stalker | Unknown | 1997 - 1998 | Desktop | macOS, Windows | Discontinued |
| Tiber | Unknown | 1995 - ? | Desktop | Windows, Mac OS Classic | Discontinued |
| Tiny Browser | Unknown | Unknown | Mobile | Android | |
| Torch | Unknown | 2012 - ? | Desktop | macOS, Windows | Discontinued |
| Torch Browser | Unknown | 2019 - ? | Desktop | macOS, Windows | Discontinued |
| Twinkstar Browser | Unknown | Unknown | Desktop & Mobile | Android, macOS, Windows | |
| UC Browser | Unknown | Unknown | Desktop & Mobile | Android, iOS, Windows, Symbian | |
| Undetectable | Unknown | Unknown | Desktop | macOS, Windows | |
| Via | Unknown | 2015 → | Mobile | Android, iOS | Active |
| Viasat | Unknown | 2019 - ? | Desktop & Mobile | Android, iOS, macOS, Windows | Abandoned |
| Vimb | Unknown | 2012 → | Desktop | Linux | |
|
Vision Mobile Browser
Formerly nWeb
|
Unknown | 2002 - 2009 | Mobile | Misc Mobile OS | |
| visurf | Unknown | Unknown | Desktop | BSD, Linux | |
| Web Prowler | Unknown | 1999 - ? | Desktop | Windows | Discontinued |
| WebBoy | Unknown | 1997 - ? | Desktop | MS-DOS | Discontinued |
| WebBuddy | Unknown | 2019 - 2025 | Mobile | iOS | Idle |
| Webian | Unknown | 2011 - 2021 | Desktop | Linux | Discontinued |
| WebNav | Unknown | ? - 1998 | Desktop | OS2 | Discontinued |
| WebsterXL | Unknown | Unknown | Desktop | Amiga OS | |
| Wen Suite III | Unknown | ? - 2004 | Desktop | Atari | |
| Wingman | Unknown | ? - 1997 | Mobile | Palm OS | Discontinued |
| WinWeb | Unknown | Unknown | Desktop | Windows | |
| WWW-LX | Unknown | 1998 - 1999 | Mobile | Palm OS | Discontinued |
| XDP Dreams | Unknown | Unknown | Game Console | Game Console | |
| Xiino | Unknown | Unknown | Mobile | Palm OS | |
| Y8 | Unknown | Unknown | Desktop | Linux, macOS, Windows | |
| Zen (2000s browser) | Unknown | ? - 2000 | Desktop | Linux, Solaris | Discontinued |