Mozilla Firefox Plugins, Add-ons and extension Page 45 of 75

Browse 1,867 Mozilla Firefox Plugins, Add-ons and extension on AlternativeTo including popular Mozilla Firefox options.

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  1. Quest Portal icon
     6 likes

    Quest Portal is the most powerful virtual tabletop (VTT) for playing TTRPGs on desktop and mobile devices. Quest Portal offers a seamless blend of innovative features, allowing you to dive into thrilling adventures with friends.

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Online
    • Android
    • iPhone
    • Google Chrome
    • Safari
    • Firefox
    Mobile Character Sheets for Call of Cthulhu
    Homebrewing and worldbuilding with AI notes
    Icons for TTRPGs
    +8
    Quest Portal on desktop web and mobile
    16 alternatives
  2. Myvidster icon
     5 likes

    myVidster is a social video bookmarking and backup service that lets you collect, share and search your videos. You can also explore video collections from other users using myVidster.

    Cost / License

    • Free
    • Proprietary

    Platforms

    • Online
    • Firefox
    Myvidster screenshot 1
    9 alternatives
  3. SyncPlaces icon
     4 likes

    SyncPlaces is a Firefox extension that allows you to synchronise your bookmarks and passwords between different installations of Firefox (e.g. a browser at Home and another at Work). It only works with Firefox v3 and above (but is compatible with older bookmark extensions).

    Cost / License

    • Free
    • Proprietary

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
    • Firefox
    SyncPlaces screenshot 1
    SyncPlaces screenshot 1
    SyncPlaces screenshot 2
    +1
    SyncPlaces screenshot 3
    6 alternatives
  4. ShopToList icon
     3 likes

    A universal wishlist, think Pocket, but for Shopping. Add a product you want to buy, get notifications if the price drops.

    Cost / License

    • Free
    • Proprietary

    Platforms

    • Online
    • Google Chrome
    • Safari
    • Firefox
    ShopToList screenshot 1
    10 alternatives
  5. ExtMemo icon
     1 like

    An AI-powered, E2EE-secured note app with logical chains. Its Privacy-First AI Guardian organizes threads without ever seeing your secrets, while Secure Sharing lets you collaborate with total E2EE.

    Cost / License

    • Freemium
    • Proprietary

    Platforms

    • Online
    • iPhone
    • iPad
    • Software as a Service (SaaS)
    • Mozilla Firefox
    ExtMemo screenshot 1
    ExtMemo screenshot 1
    ExtMemo screenshot 2
    +5
    ExtMemo screenshot 3
    54 alternatives
  6. With this extension, you can customize smooth scrolling behavior.

    The extension is worth to use, if you are frustrated at:

    Step size for scrolling by the cursor keys is so short. A built-in smooth scrolling is somewhat less sensitive and laggy. When you flick a wheel so quick.

    Cost / License

    • Free
    • Proprietary

    Platforms

    • Firefox
    8 alternatives
  7. MemoMe icon
     1 like

    Ever wanted to attach a memo to a web page? some personal information, which will be there on your next visits? Now you can - with MemoMe!

    Cost / License

    • Free
    • Proprietary

    Platforms

    • Mac
    • Windows
    • Linux
    • Google Chrome
    • Firefox
    MemoMe screenshot 1
    MemoMe screenshot 1
    MemoMe screenshot 2
  8. PdfIt icon
     3 likes

    The Pdf It! extension is designed for FireFox and runs on any platform: Windows, Mac OS X and Linux. The Pdf It! menu item will be installed at Browser-->Tools menu as well as context menu

    Cost / License

    • Free
    • Proprietary

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
    • Firefox
    PdfIt screenshot 1
    59 alternatives
  9. LinCV icon
     2 likes

    LinCV can transform your LinkedIn profile data to a beautiful printable CV with two clicks. You can also add reference data and more detailed contact information.

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Chrome OS
    • Vivaldi Browser
    • Google Chrome
    • Brave
    • Firefox
    LinCV screenshot 1
    3 alternatives
  10. Tile Tabs WE icon
     2 likes

    Tile Tabs WE provides facilities to take tabs from a parent window and arrange them in a layout of tiled sub-windows, using the toolbar button, context menu or keyboard shortcuts. Makes it easy to browse, compare or monitor multiple pages. Synchronize scroll.

    Cost / License

    • Free
    • Proprietary

    Platforms

    • Mac
    • Windows
    • Linux
    • Google Chrome
    • Firefox
    Tile Tabs WE screenshot 1
    Tile Tabs WE screenshot 1
    Tile Tabs WE screenshot 2
    1 alternatives
  11. MySessions icon
     2 likes

    MySessions is a simple session manager. You can quickly save your current browser state and reload it whenever necessary.

    Cost / License

    • Free
    • Proprietary

    Platforms

    • Mac
    • Windows
    • Linux
    • Firefox
    MySessions screenshot 1
    MySessions screenshot 1
    MySessions screenshot 2
    +1
    MySessions screenshot 3
    21 alternatives
  12. Writty icon
     1 like

    Takes notes, write your next article or book. Save as MD or HTML file and open it again. With Writty you also can export in PDF and Plain text. Includes the basic functionalities of any text editor + Dark Mode, a sleek design and RTL support.

    Cost / License

    • Freemium
    • Open Source (MIT)

    Platforms

    • Mac
    • Mozilla Firefox
    Writty screenshot 1
    54 alternatives
  13. Proofread Bot icon
     5 likes

    Proofread Bot checks your writing for grammar, style, spelling, statistic and plagiarism issues and gives recommendations to improve your writing. The tool gives you a visual text editing interface and an auto generated textual report for your convenience.

    Cost / License

    • Freemium
    • Proprietary

    Platforms

    • Online
    • Android
    • Google Chrome
    • Drupal
    • Google Drive - Docs
    • Facebook
    • Wordpress
    • Microsoft Office Suite
    • Firefox
    Proofread Bot screenshot 1
    Proofread Bot screenshot 1
    Proofread Bot screenshot 2
    56 alternatives
  14. Clerkent icon
     1 like
    • No need to check jurisdiction-specific websites when looking for foreign cases

    Cost / License

    • Free
    • Open Source

    Platforms

    • Microsoft Edge
    • Google Chrome
    • Chromium
    • Firefox
    Clerkent screenshot 1
    Clerkent screenshot 1
    1 alternatives
  15. Jelly Party icon
     5 likes

    Jelly Party is a free Chrome & Firefox extension for watching Netflix, YouTube, Disney+ and many more streaming services remotely with friends — in sync. It features integrated text-, voice- and video-chat.

    Cost / License

    • Free
    • Open Source

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Chrome OS
    • Google Chrome
    • Firefox
    Jelly Party screenshot 1
    Jelly Party screenshot 1
    Jelly Party screenshot 2
    +1
    Jelly Party screenshot 3
    23 alternatives
  16. keyconfig icon
     2 likes

    keyconfig allows you to change keyboard shortcuts. [Firefox, Thunderbird, SeaMonkey, and any other XULRunner Application]

    Cost / License

    • Free
    • Proprietary

    Platforms

    • Mac
    • Windows
    • Linux
    • Thunderbird
    • SeaMonkey
    • Firefox
  17. Obfuscate icon
     Like

    Sometimes you might want to share a screenshot of the website you're on, without revealing the personal data that is visible at that time. With Obfuscate, you can make text unreadable without changing the structure of the web page.

    Cost / License

    • Free
    • Open Source

    Platforms

    • Firefox
    Obfuscate screenshot 1
    Obfuscate screenshot 1
  18. Postcron icon
     18 likes

    Save time and effort scheduling your posts on Facebook, Twitter, LinkedIn, Pinterest, Google Plus, and Instagram, at the same time.

    Cost / License

    • Paid
    • Proprietary

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Google Chrome
    • Safari
    • Firefox
    Postcron screenshot 1
    Postcron screenshot 1
    Postcron screenshot 2
    +1
    Postcron screenshot 3
    80 alternatives
  19. Video4sure icon
     11 likes

    With group calls up to 256 users, Video4sure is an easy way to make video calls or setup group meetings. No need to register, install or pay. As soon as you visit the home page, it generates a unique invite link that you can share with your contacts.

    Cost / License

    • Free
    • Proprietary

    Platforms

    • Online
    • iPhone
    • Google Chrome
    • Opera
    • Firefox
    39 alternatives
  20. Negotiator icon
     2 likes

    Negotiator is a web extension which gives users who are familiar with HTTP requests the tool to simply block and modify them permanently.

    Cost / License

    • Free
    • Open Source

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Chrome OS
    • Android Tablet
    • BSD
    • iPad
    • Google Chrome
    • Haiku
    • Firefox
    Negotiator screenshot 1
    Options page including. Sync options(local and "Negotiator Sync") Default actions. Customization of filters.
    Full list of your filters. Note that no filters comes by default - you must define all by yourself.
    15 alternatives
  21. ThumbNew icon
     1 like

    ThumbNew is an AI-powered tool that automatically creates YouTube thumbnails. Simply provide a prompt, and it handles everything:

    Cost / License

    • Freemium
    • Proprietary

    Platforms

    • Online
    • Mozilla Firefox
    • Windows
    • Android
    • Software as a Service (SaaS)
    • Self-Hosted
    • Google Chrome
    Preview
    Generated_Thumbnail
    Generated_Thumbnail
    +3
    Generated_Thumbnail
  22. Hiddenpost icon
     4 likes

    Many websites contain secret messages and comments. Imagine you could make these messages visible or even add your own. Now imagine that this function would exist everywhere and only the users themselves would have control over it. Wouldn't that be great?

    Cost / License

    • Free
    • Proprietary

    Application type

    Alerts

    • Discontinued

    Platforms

    • Firefox
    Add comment to any website.
    Select emotion icon for your post.
    32 alternatives