Looking for something like Extensions? Here are 17 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 1 are free or have a free plan and 7 are open source.
The Firefox add-ons directory lists extensions for customizing browsing, including categories for bookmarks, downloads, feeds, games, and appearance.
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | Container Tab Groups by Menhera.org , anosatsuk124 | — | Not stated | Windows |
| 2 | bookmark batch-updater by MrOtherGuy | — | Not stated | — |
| 3 | Ecosia | Free | Not stated | — |
| 4 | Bookmark Search Plus 2 | — | Not stated | Windows |
| 5 | Sidebery | — | Yes | — |
| 6 | FireMonkey by erosman | — | Not stated | Android |
| 7 | Print Edit WE by DW-dev | — | Not stated | — |
| 8 | CRX Installer by FoxRefire | — | Not stated | Browser extension |
| 9 | Darkreader | — | Yes | Browser extension |
| 10 | Firefox CSS Hacks | — | Yes | Linux, Windows |
Container Tab Groups organizes Firefox tabs into Chrome-like groups using Firefox container tabs, which keep browsing contexts separated.
Bookmark Batch-Updater for Firefox can replace bookmark URLs or modify matching bookmark names in bulk.
The Ecosia Firefox extension sets Ecosia as the browser’s default search engine; the add-on is free to download.
Bookmark Search Plus 2 filters bookmarks by search text and shows their parent folders in a Firefox extension.
Sidebery manages Firefox tabs and bookmarks in a sidebar through a browser extension.
FireMonkey combines user-script and user-style management in a Firefox extension, with a compatibility mode for scripts from other managers.
Print Edit WE lets users edit webpage content before printing or saving it, with options described in its Firefox extension listing.
CRX Installer installs Chrome extensions in Zen, Firefox Nightly, and LibreWolf, with additional setup steps noted for some browsers.
Dark Reader is an open-source MIT-licensed browser extension for Chrome and Firefox that analyzes web pages and generates a dark mode to reduce eyestrain.
Firefox CSS Hacks collects user stylesheets for changing the appearance of Mozilla Firefox.
Adaptive Tab Bar Colour changes the Firefox theme color to match the appearance of the current website.
Anori adds customizable new-tab pages to Chrome and Firefox, with widgets for bookmarks, calendar, to-do items, and notes.
Yet Another Speed Dial combines a new-tab page and bookmark manager for Chrome, Edge, and Firefox, with site thumbnails and organization features.
Auto-Sort Bookmarks sorts Firefox bookmarks by multiple criteria, with settings for automatic sorting.
fx_cast is a Firefox extension that enables Chromecast support for casting web apps and HTML5 media, according to its project page.
Firefox Scripts provides userChromeJS, autoconfig.js, and extension scripts, with installation instructions for Firefox Developer Edition.
The CatalyzeX Firefox extension helps find code implementations for research papers across search and research sites.
Alternatives are suggested from the purpose and features described in our listings. Different pages for the same product appear once. Read each description to check whether it fits your task. How we choose alternatives · Suggest an alternative
