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ActiveGecko engine 29/30 documented

Floorp

A Firefox-based browser with vertical tabs, workspaces, sidebars, and customization for power users.

Published by Floorp Projects (Japan) Verified

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Runs on

  • macOSmacOS: Available
  • WindowsWindows: Available
  • LinuxLinux: Available
  • AndroidAndroid: Unavailable
  • iOSiOS: Partial

Choose it when

Choose Floorp for a Firefox engine with more built-in tab layouts, split view, sidebars, and workspaces than stock Firefox.

Avoid it when

Avoid it when you need official mobile apps, a minimal browser, or the least project-specific surface area.

Quick answers

Read straight off the verified record - every one of these is expanded with its source below.

Which platforms does Floorp run on?
Which platforms does Floorp run on?
Documented on macOS, Windows, and Linux. Not available on Android.
Can I install Chrome extensions?
Can I install Chrome extensions?
Partly - Chrome Web Store support is conditional.
Does it block trackers out of the box?
Does it block trackers out of the box?
Yes - tracker or ad blocking is on by default. Firefox-derived tracking protection is enabled.
Does it have built-in AI features?
Does it have built-in AI features?
No AI capability in this record is documented as built in.
Is it open source?
Open source Firefox-based project
Is it still being developed?
Is it still being developed?
Active - Actively developed community Firefox derivative.

What Floorp does

Open any row for the wording and the source behind it

Privacy and tracking

3 built in · 1 undocumented

  • Blocks trackers by defaultBlocks trackers by default: Built in

    Firefox-derived tracking protection is enabled.

  • Anti-fingerprintingAnti-fingerprinting: Built in

    Firefox-derived fingerprinting controls are available.

  • Telemetry postureTelemetry posture: Unknown

    Consult current Floorp policy for project-specific telemetry details.

  • Built-in VPN or proxyBuilt-in VPN or proxy: Built in

    Firefox's built-in VPN integration is enabled in supported regions with a Mozilla account (Floorp 12.16+).

  • Private windowsPrivate windows inherit Firefox's local privacy behavior and do not anonymize traffic.

    Private windows inherit Firefox's local privacy behavior and do not anonymize traffic.

  • Default search engineGoogle

Extensions and blocking

4 built in · 1 partial

  • Chrome Web StoreChrome Web Store: Partial
  • Firefox Add-onsFirefox Add-ons: Supported
  • Native content blockingNative content blocking: Built in

    Firefox-derived tracking protection is native.

  • Manifest V3Manifest V3: Built in

    Firefox-derived Manifest V3 support is available.

  • Manifest V2Manifest V2: Built in

    Floorp uses Firefox WebExtensions compatibility.

  • Known limitationsFirefox Add-ons are the primary store; Chrome Web Store installation shipped in Floorp 12.8+ with incomplete compatibility.

    Firefox Add-ons are the primary store; Chrome Web Store installation shipped in Floorp 12.8+ with incomplete compatibility.

Workflow

10 built in · 1 partial

  • Vertical tabsVertical tabs: Built in

    Floorp's own vertical tabs were removed in version 12; its documentation directs users to Firefox's implementation instead.

  • Tab treesTab trees: Available by extension

    Tree-style tabs come from the Tree Style Tab add-on with a Floorp optimisation mode; native grouping is Tab Stacks.

  • Workspaces or spacesWorkspaces or spaces: Built in

    Workspaces are included for task separation.

  • ProfilesProfiles: Built in

    Firefox profiles support separated contexts.

  • Split viewSplit view: Built in

    Floorp documents split-view browsing.

  • SidebarSidebar: Built in

    Sidebars and web panels are built in.

  • Reader modeReader mode: Built in

    Firefox Reader View is available.

  • Command paletteCommand palette: Built in

    A first-party command palette shipped in Floorp 12.17.

  • Sync across devicesSync across devices: Built in

    Firefox Sync compatibility is available.

  • TranslationTranslation: Built in

    Firefox-derived translation is available where supported.

  • Progressive web appsProgressive web apps: Built in

    Progressive web apps are supported by the Chromium install flow.

AI features

9 not available

  • Built-in assistantBuilt-in assistant: Unavailable
  • Page summarisationPage summarisation: Unavailable
  • Acts on pages for youActs on pages for you: Unavailable
  • AI answer engineAI answer engine: Unavailable
  • Works across open tabsWorks across open tabs: Unavailable
  • Text or image generationText or image generation: Unavailable
  • Choice of modelChoice of model: Unavailable
  • Retention or training controlsRetention or training controls: Unavailable
  • Voice or image inputVoice or image input: Unavailable

On a phone

10 undocumented

Undocumented is not the same as absent - it means the publisher does not state it.

  • Extensions on mobileExtensions on mobile: Unknown

    Extension support on mobile is not documented.

  • Can be the phone defaultCan be the phone default: Unknown

    Default-browser capability is not documented.

  • Biometric lockBiometric lock: Unknown

    Biometric locking is not documented.

  • Offline readingOffline reading: Unknown

    Offline reading is not documented.

  • Desktop-site modeDesktop-site mode: Unknown

    Desktop-site mode is not documented.

  • Download managerDownload manager: Unknown

    A built-in download manager is not documented.

  • Background playbackBackground playback: Unknown

    Background or picture-in-picture playback is not documented.

  • Web pushWeb push: Unknown

    Web push support is not documented.

  • Data saverData saver: Unknown
  • Address-bar placementAddress-bar placement: Unknown

    Address-bar placement is not documented.

Under the hood

Rendering engine
Gecko
JavaScript engine
SpiderMonkey
Upstream project
Mozilla Firefox
Release channel
stable
Code and licence
Open source Firefox-based project
Install method
Official desktop download or package.
Hardware support
Check current release notes for architecture-specific packages.
Source repository

Active. Actively developed community Firefox derivative.

Editorial view

Floorp takes the power-user features people bolt onto Firefox and ships them as one coherent desktop browser, run by Floorp Projects out of Japan on Gecko and SpiderMonkey with Mozilla Firefox upstream.

The workflow set

  • Workspaces separate contexts; split view tiles up to four panes
  • Web panels live in the sidebar
  • A first-party command palette since 12.17
  • Vertical tabs are Firefox's own native implementation, adopted after Floorp retired its version in v12
  • Tree-style tabs come via the Tree Style Tab add-on with a dedicated optimisation mode, not natively

Platforms and extensions

Official builds cover macOS, Windows, and Linux, and an iOS TestFlight beta appeared in August 2026, built on Firefox for iOS and therefore rendering with WebKit like every iPhone browser. There is no Android app. Firefox Add-ons are the primary extension path with Manifest V2 and V3 both working, and since 12.8 the Chrome Web Store installs too, with compatibility that is real but incomplete. Test any Chrome extension you depend on rather than assuming it.

Privacy

Firefox's shape with one recent addition. Tracking protection and fingerprinting controls are enabled, Google is the default engine, private windows behave like Firefox's, and from 12.16 Firefox's built-in VPN works in supported regions with a Mozilla account. Telemetry is recorded as unknown here; the project documents disabling Mozilla's, with some project-level collection described, so read the current policy if that field matters to you.

The trade

The same one every enthusiast fork carries. Floorp's custom features move at the project's pace, not Mozilla's, and each one is a surface that can lag or wobble across rebases. It has been maintained steadily for years, which counts for something, but a conservative deployment should still treat it as a community product.

The verdict

Choose Floorp when you want workspaces, multi-pane split view, and sidebars built into a Firefox engine instead of assembled from add-ons. Choose Zen when the priority is the compact Arc-style layout, and stock Firefox when official support and mobile apps outrank the extra controls. Import bookmarks and passwords first, then test your add-ons against the current release before retiring the old browser.

Where these facts come from

Every capability above is read from a primary source and dated. 1 of 30 fields stay recorded as unknown rather than assumed.

If this is not it

Alternatives to Floorp

Head to head

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