SigmaOS AlternativesWeb Browsers and other similar apps like SigmaOS

SigmaOS is described as 'The new home for your internet. One window. Many workspaces. All your tabs' and is a Web Browser in the web browsers category. There are more than 100 alternatives to SigmaOS for a variety of platforms, including Windows, Mac, Linux, Android and Android Tablet apps. The best SigmaOS alternative is Mozilla Firefox, which is both free and Open Source. Other great apps like SigmaOS are Zen Browser, Brave, Google Chrome and Tor Browser.

More about SigmaOS

SigmaOS alternatives page was last updated Oct 30, 2025

Mozilla Firefox
7509 likes
Web browser by Mozilla with Gecko and WebKit engines. Offers tabbed browsing, HTML add-ons, Enhanced Tracking Protection, cross-device syncing, and privacy customization. Includes tools for developers and a 'Facebook Container' extension.
244 Mozilla Firefox alternatives
Cost / License
Free
Open Source
Application type
Web Browser
Origin
United States
Platforms
Mac
Windows
Linux
Android
iPhone
Android Tablet
BSD
HUAWEI AppGallery
iPad
AppImageHub
Snapcraft
Flathub
Samsung Galaxy Store
PortableApps.com
Haiku
Flatpak
Homebrew
Chocolatey
Gecko
+7
Is Mozilla Firefox a good alternative to SigmaOS?
Mozilla Firefox is the most popular Windows, Android, Mac & iPhone alternative to SigmaOS.
Mozilla Firefox is the most popular Open Source & free alternative to SigmaOS.
Mozilla Firefox is Free and Open SourceSigmaOS is Free Personal and Proprietary
Mozilla Firefox is Customizable and Security-focusedSigmaOS is not according to our users
Zen Browser
270 likes
Experience a privacy-focused, open-source browser rich with features like vertical tabs, Split View, Zen Glance, and extensive security protocols. Built on Firefox, it's currently in beta, emphasizing privacy and adaptability, with future plans for horizontal tabs.
101 Zen Browser alternatives
Cost / License
Free
Open Source
Application type
Web Browser
Origin
Spain
EU
Platforms
Mac
Windows
Linux
Arch Linux
Flathub
Flatpak
+8
Is Zen Browser a good alternative to SigmaOS?
Brave
1155 likes
Fast, secure browser integrating ad and tracker blockage, privacy features, and VPN. Offers seamless performance with data and battery optimization, faster loads by blocking pop-ups and ads. Safeguards user privacy with tracking protections and built-in brave search.
247 Brave alternatives
Cost / License
Free
Open Source
Application type
Web Browser
Origin
United States
Platforms
Mac
Windows
Linux
Android
iPhone
Android Tablet
iPad
Snapcraft
Flathub
Homebrew
Chocolatey
Samsung Galaxy Store
+4
Is Brave a good alternative to SigmaOS?
Ad
Opera GX
Web browser optimized for gamers, with CPU, RAM, and network limiters, Twitch and Discord sidebar integration, customizable gaming themes, GX Corner for games, news, deals, mobile sync via Flow, multitasking chat, ad blocker, and...

https://www.opera.com
Learn More
Google Chrome
4953 likes
Open-source browser featuring real-time web translation, integrated password manager, dark mode, task-level resource management, multi-user account support, automatic updates, and cross-device sync, available on all major operating systems for secure, efficient browsing.
84 Google Chrome alternatives
Cost / License
Free
Proprietary
Application type
Web Browser
Origin
United States
Platforms
Mac
Windows
Linux
Android
iPhone
Chrome OS
Android Tablet
iPad
Flathub
PortableApps.com
+8
Is Google Chrome a good alternative to SigmaOS?
Tor Browser
1037 likes
Experience true privacy online with a portable browser offering built-in proxy, encryption, and tracker blocking. Navigate without revealing location or browsing data, enjoying ad-free, secure surfing across platforms like Windows, Mac, Linux, and Android with no installation hassle.
67 Tor Browser alternatives
Cost / License
Free
Open Source
Application type
Web Browser
Origin
United States
Platforms
Mac
Windows
Linux
Android
Tor
OpenBSD
Flathub
Is Tor Browser a good alternative to SigmaOS?
Vivaldi
1267 likes
Flexible browser featuring deep customization, integrated ad and tracker blocking, Chromium compatibility, powerful tab management tools, note sync, screenshot utility, custom web panels, theme and toolbar editing, plus support for Android, iOS, desktop, and privacy protections.
184 Vivaldi alternatives
Cost / License
Free
Proprietary
Application type
Web Browser
Origin
Norway
Platforms
Mac
Windows
Linux
Android
iPhone
Android Tablet
iPad
Snapcraft
Android Auto
Flathub
HUAWEI AppGallery
Samsung Galaxy Store
+9
Is Vivaldi a good alternative to SigmaOS?
Chromium
1139 likes
Open-source browser project offering strong security, fast performance, and stability with broad support for Windows, macOS, Linux, and Android, extensive customization, frequent security updates, minimal default tracking, and foundation for multiple browsers.
194 Chromium alternatives
Cost / License
Free
Open Source
Application type
Web Browser
Origin
United States
Platforms
Mac
Windows
Linux
Android
BSD
TrueOS
Xfce
Flathub
Snapcraft
Is Chromium a good alternative to SigmaOS?
Floorp
123 likes
The Floorp project is a project that seeks privacy and a balance between anonymity and the public nature of the web.
136 Floorp alternatives
Cost / License
Free
Open Source
Application type
Web Browser
Origin
Japan
Platforms
Mac
Windows
Linux
Flathub
Flatpak
Snapcraft
+1
Is Floorp a good alternative to SigmaOS?
Opera
1820 likes
A fast, secure web browser with advanced privacy features like a built-in VPN with ad blocking, Speed Dial, smart AI, cloud sync, picture-in-picture mode, and easy extensibility through plugins and extensions.
231 Opera alternatives
Cost / License
Free
Proprietary
Application type
Web Browser
Origin
Norway
Platforms
Mac
Windows
Linux
Android
iPhone
Android Tablet
iPad
Flathub
PortableApps.com
Kindle Fire
Flatpak
HUAWEI AppGallery
Samsung Galaxy Store
Snapcraft
+9
Is Opera a good alternative to SigmaOS?
ungoogled-chromium
248 likes
Open-source web browser eliminates Google integration, disables background communications, strips non-free binaries, and includes privacy-focused patches and scripts for full transparency, control, and compatibility with Chromium extensions across major platforms.
203 ungoogled-chromium alternatives
Cost / License
Free
Open Source
Application type
Web Browser
Origin
International
Platforms
Mac
Windows
Linux
Flathub
+1
Is ungoogled-chromium a good alternative to SigmaOS?
Pale Moon
402 likes
This open-source Goanna-based browser for Windows, Linux, Mac, and FreeBSD offers customization, security, and privacy. Forked from Firefox, it's optimized for modern processors, ad-free, and supports unique extensions, community-backed. Comes with a functional status bar, supports NPAPI plugins.
196 Pale Moon alternatives
Cost / License
Free
Open Source
Application type
Web Browser
Origin
Netherlands
EU
Platforms
Mac
Windows
Linux
BSD
+1
Is Pale Moon a good alternative to SigmaOS?
Microsoft Edge
327 likes
Chromium-based web browser for Windows, macOS, Linux, iOS, and Android with Chrome extension support, smart security, privacy tools, syncing of history and bookmarks, immersive reader, PDF tools, Collections for organizing content, and customizable new tab layouts.
226 Microsoft Edge alternatives
Cost / License
Free
Proprietary
Application type
Web Browser
Origin
United States
Platforms
Mac
Windows
Linux
Android
iPhone
Android Tablet
iPad
Flathub
HUAWEI AppGallery
Samsung Galaxy Store
+4
Is Microsoft Edge a good alternative to SigmaOS?