Updated at: May 6, 2026
This is a list of web browsers that are no longer being developed by the company or person who was responsible for them. And in particular, these browsers have had some kind of official announcement or indication that the browser project has been terminated; either announced via a Press Release, a Social Media post, a note on the official site, or perhaps their website itself doesn't work any more.
| Browser Name | Rendering Engine | Timeline | Device Type | Operating Systems | Status |
|---|---|---|---|---|---|
| Internet Explorer | Trident | 1995 - 2022 | Desktop | Windows | Discontinued |
| Abaco | Custom | 2006 - ? | Desktop | Linux, Plan 9 | Discontinued |
|
Acent Browser
Formerly Osiris Browser
|
Chromium | 2022 - 2025 | Desktop | Linux, macOS, Windows | Discontinued |
| ActivatorDesk | Unknown | 2000 - ? | Desktop | Windows | Discontinued |
| Agora | Text Mode | 1996 - 1997 | Desktop | Unix-like | Discontinued |
| Air Mosaic | Custom | 1994 - ? | Desktop | Windows | Discontinued |
| Alloy | WebKit | 2016 - ? | Desktop | OS X | Discontinued |
| Amaya | Custom | 1996 - 2012 | Desktop | Unix-like, Windows, OS X, NeXTSTEP | Discontinued |
| AmiZilla | Gecko | 2003 - 2009 | Desktop | Amiga OS | Discontinued |
| AMosaic | Custom | 1993 - ? | Desktop | Amiga OS | Discontinued |
| aMozillaX | Gecko | 1999 | Desktop | Amiga OS | Discontinued |
| AMP Browser | Chromium | 2017 | Desktop | Linux | Discontinued |
| AMSD Ariadna | Custom | 1995 - 1996 | Desktop | Windows | Discontinued |
| AOL Explorer | Trident | 2005 - 2006 | Desktop | Windows | Discontinued |
|
AOLPress
Formerly Navipress
|
Custom | 1994 - 1997 | Desktop | Windows, Mac OS Classic | Discontinued |
| Aplix | Custom | 1996 - ? | Game Console | Game Console | Discontinued |
| Arc Browser | Chromium | 2023 - 2025 | Desktop & Mobile | iOS, macOS, Windows | Discontinued |
| ArcWeb | Unknown | 2000 - ? | Discontinued | ||
| Arena Browser | Custom | 1993 - 1998 | Desktop | Unix-like, NeXTSTEP | Discontinued |
| Argo | Custom | 1994 - 1997 | Desktop | Unix-like | Discontinued |
| Arora | WebKit | 2008 - 2010 | Desktop | BSD, Linux, macOS, Windows, OS2, Haiku, Genode, Misc Desktop OS | Discontinued |
| Atom Browser | Chromium | 2019 - 2024 | Desktop & Mobile | Android, macOS, Windows | Discontinued |
| Avant Browser | Multiple | 1999 - 2020 | Desktop | Windows | Discontinued |
| AXplorer | Chromium | 2021 - 2022 | Desktop | Linux, macOS, Windows | Discontinued |
| Beaker Browser | Electron | 2017 - 2022 | Desktop | Linux, macOS, Windows | Discontinued |
| Beam | WebKit | 2021 - 2025 | Desktop | macOS | Discontinued |
| Beonex Communicator | Gecko | 2003 - 2004 | Desktop | BSD, Linux, macOS, Windows | Discontinued |
| Bezilla | Gecko | 1998 - 2007 | Desktop | BeOS, Haiku | Discontinued |
| Bolt | WebKit | 2009 - 2011 | Mobile | Misc Mobile OS | Discontinued |
| Bonsai Browser | Electron | 2021 - 2022 | Desktop | Linux, macOS, Windows | Discontinued |
| Borneo | QtWebEngine | 2013 | Desktop | Linux | Discontinued |
| Bromite | Chromium | 2017 - 2022 | Mobile | Android | Discontinued |
| Browse-It | Unknown | 2000 - 2002 | Mobile | Palm OS | Discontinued |
| Browser Monkey | Electron | 2015 - 2019 | Desktop | Linux, macOS, Windows | Discontinued |
| BrowseX | Custom | 2000 - 2001 | Desktop | Windows | Discontinued |
| CachyOS Browser | Gecko | 2021 - 2025 | Desktop | Linux | Discontinued |
| Cake Browser | Unknown | 2017 - 2022 | Mobile | Android, iOS | Discontinued |
|
Camino
Formerly Chimera
|
Gecko | 2002 - 2012 | Desktop | OS X | Discontinued |
| Cello | Custom | 1993 - 1994 | Desktop | Windows, OS2 | Discontinued |
| Chameleon Browser | Unknown | ? - 1999 | Desktop | Windows | Discontinued |
| Charon | Custom | 2006 - 2024 | Desktop | Plan 9 | Discontinued |
| Chedot | Chromium | 2018 - 2024 | Desktop | Windows | Discontinued |
| Cheetah | Unknown | 2001 | Desktop | Linux, Unix-like | Discontinued |
| Chimera | Unknown | 1997 | Desktop | Unix-like | Discontinued |
| Chromnius | Chromium | 2022 - 2025 | Desktop | Windows | Discontinued |
| Chronicler | Electron | 2018 | Desktop | macOS | Discontinued |
| Cineast | Unknown | Unknown | Desktop | Linux, Unix-like, Solaris, HP-UX | Discontinued |
| Classilla | Custom | 2009 - 2021 | Desktop | Mac OS Classic | Discontinued |
| Cliqz | Gecko | 2015 - 2021 | Desktop | macOS, Windows | Discontinued |
| Colibri | Electron | 2016 - ? | Desktop | Linux, macOS, Windows | Discontinued |
| Conkeror | Gecko | 2008 - 2017 | Desktop | Unix-like | Discontinued |
| Contiki | Text Mode | Unknown | Desktop | Atari, Misc Desktop OS | Discontinued |
| Core Browser | Chromium | 2019 | Desktop | macOS, Windows | Discontinued |
| Cruz | WebKit | 2011 - 2012 | Desktop | macOS | Discontinued |
| CryptoTab Browser | Chromium | 2018 - 2022 | Desktop & Mobile | Android, macOS | Discontinued |
| Crystal Atari Browser | Unknown | Unknown | Desktop | Atari | Discontinued |
| Cyberdog | Custom | 1995 - 1997 | Desktop | Mac OS Classic | Discontinued |
| CyberGhost | Chromium | 2022 - 2024 | Desktop & Mobile | iOS, macOS, Windows | Discontinued |
| Cyberjack | Custom | 1995 - 1996 | Desktop | Windows | Discontinued |
| dBrowser | Electron | 2022 | Desktop | Linux, macOS, Windows | Discontinued |
| Deepfish | Unknown | 2007 - 2008 | Mobile | Windows Mobile | Discontinued |
| Deepnet Explorer | Trident | 2005 - 2006 | Desktop | Windows | Discontinued |
| Defiant Browser | Chromium | 2018 - 2020 | Desktop | Linux, macOS, Windows | Discontinued |
|
DR-WebSpyder
Also known as Embrowser, and also Embedix Browser
|
Custom | 1997 - 1999 | Desktop | MS-DOS | Discontinued |
| EGBrowser | Unknown | Unknown | Game Console | Game Console | Discontinued |
| Elza Browser | Electron | 2020 - 2021 | Desktop | Linux, macOS, Windows | Discontinued |
|
Embedix Browser
Formerly Embrowser
|
Custom | 1999 - ? | Desktop | Linux | Discontinued |
| Emissary | Custom | 1995 - 1996 | Desktop | Windows | Discontinued |
| Eolas WebRouser | Custom | 1995 - ? | Desktop | Unix-like | Discontinued |
| Erwise | Custom | 1992 - 1994 | Desktop | Unix-like | Discontinued |
| EudoraWeb | Unknown | Unknown | Mobile | Palm OS | Discontinued |
| eWorld Browser | Unknown | 1994 - 1996 | Desktop | Mac OS Classic | Discontinued |
| Felida Browser | Electron | 2021 - 2025 | Desktop | Linux, macOS, Windows | Discontinued |
| Ferny | Electron | 2019 | Desktop | Linux, Windows | Discontinued |
| Fifth Browser | WebKit | 2013 - 2020 | Desktop | Linux | Discontinued |
| Fizzilla | Unknown | 1999 - 2002 | Desktop | OS X | Discontinued |
| Flock | Chromium | 2005 - 2011 | Desktop | Linux, macOS, Windows | Discontinued |
| Fresco | Custom | 1994 - 2004 | Desktop | Linux, Windows | Discontinued |
| Galeon | Gecko | 2000 - 2008 | Desktop | Unix-like | Discontinued |
| Galio | Custom | 2004 - 2010 | Desktop | Linux, Windows | Discontinued |
| Gazelle | Custom | 2009 | Desktop | Windows | Discontinued |
| Ghostery Browser | Unknown | 2023 - 2025 | Desktop | Windows | Discontinued |
| Ghostzilla | Gecko | 2002 | Desktop | Windows | Discontinued |
| GLICER Browser | Electron | 2016 | Desktop | Linux, macOS, Windows | Discontinued |
| GlobeHopper | Custom | Unknown | Desktop | Misc Desktop OS | Discontinued |
| Glow Browser | WebKit | 2020 | Desktop & Mobile | iOS, macOS | Discontinued |
| Grail | Custom | 1995 - 1999 | Desktop | Unix-like | Discontinued |
| Green Browser | Trident | 2009 - 2016 | Desktop | Windows | Discontinued |
| Gzilla | Gecko | 1998 - 1999 | Desktop | Linux | Discontinued |
| Hack Browser | Electron | 2015 - 2019 | Desktop | Linux, macOS, Windows | Discontinued |
| Hayami Browser | Electron | 2023 - 2025 | Desktop | Windows | Discontinued |
| Helium | WebKit | 2015 - 2022 | Desktop | OS X | Discontinued |
| Highwire | Custom | 2001 - 2005 | Desktop | Atari | Discontinued |
| Hv3 | Tkhtml | 1995 - 2006 | Desktop | Linux, Unix-like | Discontinued |
| IBM Home Page Reader | Custom | 1998 - 2005 | Desktop | Windows | Discontinued |
| IBM WebExplorer | Custom | 1994 - 1998 | Desktop | OS2 | Discontinued |
| Iceweasel | Gecko | 2006 - 2016 | Desktop | Linux | Discontinued |
| Insight Browser | WebKit | 2021 - 2023 | Mobile | iOS | Discontinued |
| Internet Channel | Presto | 2006 - 2011 | Game Console | Game Console | Discontinued |
| Internet Explorer for Mac | Tasman | 1996 - 2003 | Desktop | OS X, Mac OS Classic | Discontinued |
| Internet Explorer for UNIX | Trident | 2001 - 2002 | Desktop | Solaris, HP-UX | Discontinued |
| Internet Explorer Mobile | Trident | 1997 - 2014 | Mobile | Windows Phone 8.1, Windows CE | Discontinued |
| InternetWorks | Unknown | 1994 - ? | Desktop | Windows | Discontinued |
| iPanel Microbrowser | Unknown | Unknown | Discontinued | ||
| Iris Browser | WebKit | 2008 - 2009 | Mobile | Windows Mobile, Windows CE | Discontinued |
| Jazilla | Unknown | 1999 - 2000 | Desktop | Java Platform | Discontinued |
|
JosBrowser
Formerly JoZilla
|
Unknown | 1998 - 2001 | Desktop | Java Platform | Discontinued |
| Jumanji Browser | WebkitGTK | 2010 - 2024 | Desktop | Linux | Discontinued |
| Junior | Triden | 1999 - 2001 | Discontinued | ||
| Ka Ko'okele | Unknown | 1998 - 2006 | Desktop | Mac OS Classic | Discontinued |
| Kaktus | Electron | 2016 - 2024 | Desktop | Linux, macOS, Windows | Discontinued |
| Kazehakase | Multiple | 2003 - 2009 | Desktop | Unix-like | Discontinued |
| KidZui | Unknown | 2006 - 2014 | Desktop & Mobile | iOS, macOS, Windows | Discontinued |
| Kingpin Browser | Unknown | 2019 - ? | Desktop | macOS, Windows | Discontinued |
| Kiwi Browser | Chromium | 2021 - 2025 | Mobile | Android | Discontinued |
| Kylo | Gecko | 2010 - 2019 | Desktop | Windows, OS X | Discontinued |
| Light Browser | CefSharp | 2020 | Desktop | Windows | Discontinued |
| Links (Atari) | Unknown | Unknown | Desktop | Atari | Discontinued |
| LunaSuite | Unknown | 2001 - 2002 | Mobile | Apple Newton | Discontinued |
| MacWeb | Custom | 1994 - 1996 | Desktop | Mac OS Classic | Discontinued |
|
MacWWW
Also known as Samba
|
Custom | 1992 - 1994 | Desktop | Mac OS Classic | Discontinued |
| Mercury | Unknown | 2012 - 2015 | Mobile | Android, iOS | Discontinued |
| MicroB | Gecko | 2007 - 2008 | Desktop | Misc Desktop OS | Discontinued |
| MidasWWW | Custom | 1992 | Desktop | Unix-like | Discontinued |
| Minimo | Gecko | 2004 - 2007 | Mobile | Windows CE | Discontinued |
| Minuet | Custom | 1994 - 1996 | Desktop | MS-DOS | Discontinued |
| Minum | Electron | 2015 - 2018 | Desktop | Linux, macOS, Windows | Discontinued |
| Mist | Electron | 2015 - 2019 | Desktop | Linux, macOS, Windows | Discontinued |
| Mitra | QtWebEngine | 2021 | Desktop | Linux | Discontinued |
| MMM | Unknown | 1997 - 1998 | Desktop | Unix-like | Discontinued |
| Mothra | Custom | 1995 - 2011 | Desktop | Plan 9 | Discontinued |
| MSN Explorer | Trident | 2001 - ? | Desktop | Windows | Discontinued |
| Mull-Fenix | Gecko | 2017 - ? | Mobile | Android | Discontinued |
| MultiTorg Opera | Custom | 1994 - 1996 | Discontinued | ||
| Multiweb | Unknown | 2000 | Desktop | Windows | Discontinued |
| NCSA Mosaic | Custom | 1993 - 1997 | Desktop | Unix-like, Windows, OS2, Misc Desktop OS | Discontinued |
| NeoPlanet | Trident | 1997 - 2001 | Desktop | Windows | Discontinued |
| Net-Tamer | Unknown | Unknown | Desktop & Mobile | Windows, Misc Mobile OS | Discontinued |
| NetCaptor | Trident | 1997 - 2005 | Desktop | Windows | Discontinued |
| Netcomber | Unknown | 1995 | Desktop | OS2 | Discontinued |
| NetCruiser | Unknown | 1995 - 1998 | Desktop | Windows | Discontinued |
| NetHopper | Custom | 1996 - 1998 | Mobile | Apple Newton | Discontinued |
| NetLink Custom Web Browser | Custom | 1996 - 1997 | Game Console | Game Console | Discontinued |
| Netomat | Unknown | 1999 - 2001 | Desktop | Linux, Windows | Discontinued |
| NetPositive | Custom | Unknown | Desktop | BeOS | Discontinued |
| Netscape | Gecko | 1994 - 2008 | Desktop | Linux, macOS, Windows, HP-UX | Discontinued |
| NetSurfer (NeXTSTEP) | Custom | Unknown | Desktop | NeXTSTEP | Discontinued |
| NewtScape | Unknown | 1997 - 2001 | Mobile | Apple Newton | Discontinued |
|
Nexus
Formerly WorldWideWeb
|
Custom | 1990 - 1992 | Desktop | NeXTSTEP | Discontinued |
| Nexus Browser | Trident | 2020 | Desktop | Windows | Discontinued |
| Ninetails | Electron | 2021 - 2022 | Desktop | Linux, macOS, Windows | Discontinued |
| Ninja Browser | Electron | Unknown | Desktop | macOS | Discontinued |
| Nintendo 3DS Browser | Unknown | 2011 - 2020 | Game Console | Game Console | Discontinued |
| Nintendo DS Browser | Presto | 2006 - ? | Game Console | Game Console | Discontinued |
| Nintendo Wii Browser | Presto | 2006 - 2013 | Game Console | Game Console | Discontinued |
| Nintendo Wii U Browser | Unknown | 2012 - ? | Game Console | Game Console | Discontinued |
|
Nokia Browser for Symbian
Formerly Web Browser for S60
|
WebKit | 2002 - ? | Mobile | Symbian | Discontinued |
| Nokia Xpress | Custom | 2012 - 2015 | Mobile | Nokia X | Discontinued |
| Off By One | Custom | 2001 - 2004 | Desktop | Windows | Discontinued |
| OmniWeb | WebKit | 1995 - 2012 | Desktop | OS X, NeXTSTEP | Discontinued |
| Opera Coast | Unknown | 2013 - 2017 | Mobile | iOS | Discontinued |
| Opera Crypto Browser | Chromium | Unknown | Desktop | Linux, macOS, Windows | Discontinued |
| Opera Neon | Chromium | 2017 - ? | Desktop | macOS, Windows | Discontinued |
| Oracle PowerBrowser | Custom | 1996 | Discontinued | ||
| Oregano | Custom | 2000 - 2007 | Desktop | RISC OS | Discontinued |
| Origyn | Custom | ? - 2014 | Desktop | Amiga OS, Misc Desktop OS | Discontinued |
|
Orions Browser
Formerly Monument Browser
|
Unknown | Unknown | Desktop | Windows | Discontinued |
| Osiris Browser | Unknown | Unknown | Desktop | Windows | Discontinued |
| Palmscape | Unknown | 2002 - 2005 | Mobile | Palm OS | Discontinued |
| Pathworks Mosaic | Unknown | ? - 1994 | Desktop | Unix-like, Windows | Discontinued |
| Peacock | Electron | 2019 - 2020 | Desktop | Linux, macOS, Windows | Discontinued |
| Pennywise | Electron | 2018 - ? | Desktop | macOS | Discontinued |
| Peruse | Electron | 2015 - 2018 | Desktop | Linux, macOS, Windows | Discontinued |
| Phoenix | Unknown | 1993 - 1995 | Desktop | Linux, Windows, MS-DOS | Discontinued |
| Phoenix TkWWW | Custom | 1993 - 1995 | Desktop | Linux, Windows, MS-DOS | Discontinued |
| PlanetWeb | Custom | 1999 - 2001 | Game Console | Game Console | Discontinued |
| PlasmaFox | Gecko | 2019 - 2021 | Desktop | Linux | Discontinued |
| PlayStation 2 NetFront | NetFront | Unknown | Game Console | Game Console | Discontinued |
| PlayStation 3 Browser | NetFront | 2006 - 2016 | Game Console | Game Console | Discontinued |
| PlayStation 4 Browser | NetFront | 2013 - 2024 | Game Console | Game Console | Discontinued |
| PlayStation Portable | Unknown | 2004 - 2015 | Game Console | Game Console | Discontinued |
| Polaris | WebKit | 2002 - 2009 | Mobile | Misc Mobile OS | Discontinued |
| Poly Browser | Electron | 2014 - 2016 | Desktop | Linux, macOS, Windows | Discontinued |
| Power Browser | Unknown | Unknown | Desktop & Mobile | Android, macOS, Windows | Discontinued |
| Procomm Plus Web Zeppelin | Custom | 1996 - 2002 | Desktop | Windows | Discontinued |
| ProxiWeb | Unknown | ? - 2000 | Mobile | Windows CE, Palm OS | Discontinued |
| Pulse Browser | Gecko | 2021 - 2024 | Desktop | Linux | Discontinued |
| QtWeb | WebKit | 2008 - 2013 | Desktop | Linux, macOS, Windows | Discontinued |
| QuarterDeck Mosaic | Custom | 1995 - 1998 | Desktop | Windows | Discontinued |
| Redcore | Chromium | 2018 | Desktop & Mobile | Android, iOS, Linux, Windows | Discontinued |
| rekonq | WebKit | 2008 - 2018 | Desktop | Linux | Discontinued |
| retawq | Text Mode | 2001 - 2006 | Desktop | Linux, Unix-like | Discontinued |
| Rockmelt | Chromium | 2010 - 2013 | Desktop & Mobile | Android, iOS, Windows | Discontinued |
| SalamWeb | Chromium | 2019 - 2021 | Desktop & Mobile | Android, iOS, macOS, Windows | Discontinued |
| Sanbrowser | Multiple | 2019 - 2021 | Desktop | Windows | Discontinued |
| SEOBrowse | Electron | Unknown | Desktop | macOS, Windows | Discontinued |
| Shiira | WebKit | 2004 - 2009 | Desktop | macOS | Discontinued |
| Sidekick | Unknown | 2020 - 2024 | Desktop | Linux, macOS, Windows | Discontinued |
| Skweezer | Unknown | 2003 - 2008 | Mobile | Misc Mobile OS | Discontinued |
| Skyfire | Gecko | 2008 - 2014 | Mobile | Android, iOS, Symbian, Windows Mobile | Discontinued |
| SlashB | Unknown | 2020 - ? | Desktop | Linux, macOS, Windows | Discontinued |
| Slim Browser | Gecko | ? - 2023 | Desktop | Windows | Discontinued |
| SlipKnot | Custom | 1994 - 1998 | Desktop | Windows | Discontinued |
| SpaceTime | Trident | 2007 - 2010 | Desktop | Windows | Discontinued |
| SPRY Mosaic | Unknown | Unknown | Discontinued | ||
| Steel | WebKit | 2008 - 2009 | Mobile | Android | Discontinued |
| Sunbird | Gecko | 2003 - 2010 | Desktop | Linux, macOS, Windows, Solaris | Discontinued |
| Swiftfox | Gecko | 2005 - 2017 | Desktop | Linux | Discontinued |
| Swiftweasel | Gecko | 2007 - 2009 | Desktop | Linux | Discontinued |
| Synth | Chromium | 2021 - 2025 | Desktop | macOS, Windows | Discontinued |
| Tango | Unknown | 1995 - 1999 | Discontinued | ||
| TeaShark | Unknown | 2007 - 2009 | Mobile | Misc Mobile OS | Discontinued |
| TenFourFox | Gecko | 2010 - 2020 | Desktop | OS X | Discontinued |
| The Light of Adamas | Unknown | ? - 2001 | Desktop | Atari | Discontinued |
| The Web Stalker | Unknown | 1997 - 1998 | Desktop | macOS, Windows | Discontinued |
| theWeb | Chromium | 2019 - 2021 | Desktop | Linux, macOS, Windows | Discontinued |
| ThunderHawk | Custom | 2001 - 2008 | Mobile | Misc Mobile OS | Discontinued |
| Tiber | Unknown | 1995 - ? | Desktop | Windows, Mac OS Classic | Discontinued |
| Tilectron | Electron | 2015 | Desktop | Linux, macOS, Windows | Discontinued |
| Timberwolf | Gecko | 2010 - 2012 | Desktop | Amiga OS | Discontinued |
| Tkhtml | Text Mode | 1994 - ? | Desktop | Unix-like | Discontinued |
| TkWWW | Custom | 1992 - 1995 | Desktop | Unix-like | Discontinued |
| Torch | Unknown | 2012 - ? | Desktop | macOS, Windows | Discontinued |
| Torch Browser | Unknown | 2019 - ? | Desktop | macOS, Windows | Discontinued |
| Turbo Browser | Electron | 2021 | Desktop | Linux, macOS, Windows | Discontinued |
| UdiWWW | Custom | 1995 - 1996 | Desktop | Windows | Discontinued |
| Unstoppable Blockchain Browser | Electron | 2019 - 2020 | Desktop | macOS, Windows | Discontinued |
| Uzbl | WebKit | 2009 - 2016 | Desktop | Unix-like | Discontinued |
| Verso | Servo | 2025 - ? | Desktop | Linux, macOS, Windows | Discontinued |
| ViewML | Custom | Unknown | Desktop | Linux | Discontinued |
| ViolaWWW | Custom | 1992 - 1995 | Desktop | Unix-like | Discontinued |
| WannaBe | Text Mode | 2001 - 2005 | Desktop | Mac OS Classic | Discontinued |
| Waterfox Classic | Gecko | 1998 - 2022 | Desktop | Linux, macOS, Windows | Discontinued |
| Wave Browser | Chromium | 2015 - 2025 | Desktop & Mobile | Android, iOS, macOS, Windows | Discontinued |
| Web Prowler | Unknown | 1999 - ? | Desktop | Windows | Discontinued |
| WebBoy | Unknown | 1997 - ? | Desktop | MS-DOS | Discontinued |
| WebDiscover | Chromium | 2019 - ? | Desktop | Windows | Discontinued |
| Webian | Unknown | 2011 - 2021 | Desktop | Linux | Discontinued |
| WebNav | Unknown | ? - 1998 | Desktop | OS2 | Discontinued |
| Wexond | Electron | 2017 - 2023 | Desktop | Linux, macOS, Windows | Discontinued |
| windowed | Electron | 2017 - 2022 | Desktop | macOS, Windows | Discontinued |
| Wingman | Unknown | ? - 1997 | Mobile | Palm OS | Discontinued |
| WinWAP | Custom | 1999 - 2008 | Mobile | Windows CE | Discontinued |
| WWW-LX | Unknown | 1998 - 1999 | Mobile | Palm OS | Discontinued |
|
xB Browser
Formerly TorPark and Xerobank browser
|
Gecko | 2006 - 2009 | Desktop | Windows | Discontinued |
| XBox 360 Browser | Trident | 2005 - 2016 | Game Console | Game Console | Discontinued |
| XBox One Browser | Trident | 2014 - 2020 | Game Console | Game Console | Discontinued |
|
Xombrero
Formerly xxxterm
|
WebKit | 2012 - 2015 | Desktop | Unix-like, Windows | Discontinued |
| Yaeb | Electron | Unknown | Desktop | Linux, macOS, Windows | Discontinued |
| ZAC Browser | Trident | 2006 - 2009 | Desktop | Windows | Discontinued |
| Zen (2000s browser) | Unknown | ? - 2000 | Desktop | Linux, Solaris | Discontinued |