Welcome to SeaMonkey Add-ons.
Add extra features and styles to make SeaMonkey your own.Close
Organize your schedule and life's important events in a calendar that's fully integrated with your Thunderbird email. Manage multiple calendars, create your daily to do list, invite friends to events, and subscribe to public calendars.
This add-on is not compatible with your version of SeaMonkey because of the following:
- Add-on has opted into strict compatibility checking.
µBlock No Restart
Finally, an efficient blocker. Easy on CPU and memory.
Session Manager No Restart
Session Manager saves and restores the state of all or some windows - either when you want it or automatically at startup and after crashes. It can also automatically save the state of open windows individually.
Copies text without formatting
Synchronizes contacts & groups between Thunderbird or SeaMonkey and Google Contacts. Imports Facebook friends, contacts you follow on Twitter, and more.
Add more items to Add-ons Manager context menu.
UnMHT No Restart
UnMHT allows you to view MHT (MHTML) web archive format files, and save complete web pages, including text and graphics, into a single MHT file in Firefox/SeaMonkey.
A simple note-taking extension.
A clean, easy to use and highly extensible Internet Relay Chat (IRC) client.
Removes formatting from copied text.
Select a number of links with a rectangle and open them all in new tabs in the same or a new window(s), download them or copy them to the clipboard. You can also lasso checkboxes to quickly check or uncheck them.
True "Send Later" functionality to schedule the time for sending an email.
DOES NOT BLOCK ADS! Don't install this add-on if you don't know what 'uploading' means!
This add-on Uploads the filters from your Adblock Plus installation to a FTP, HTTP, HTTPS server...
Extension Auto-Installer No Restart
Extension Auto-Installer is a helper for Firefox/SeaMonkey/Thunderbird extension developers: it allows automatically adding or updating browser extensions, e.g. via command line tools. This makes testing your changes easier.
FoxClocks No Restart
FoxClocks shows times around the world - or just your local time - at the bottom of your browser. It deals with daylight saving time so you don't have to.
AutoPager Fixed is a working version of AutoPager extension for Firefox 36+ (non-E10s mode) to autoload the next page(s) when you scroll pages.
ATTENTION: DISABLE THE ORIGINAL AUTOPAGER ADDON!
Enables desktop notifications like in Chrome (e.g. Gmail, imo.im) and, if the site doesn't support them, it can notify new messages or updates detecting changes of the title (e.g. Hotmail, Yahoo, Facebook, Twitter). Even if the browser is minimized!
Mouse gestures for SeaMonkey & Firefox: navigate & execute commands using mouse gestures (with single mouse button) and rocker gestures (by pressing 2 mouse buttons). Also: scroll wheel navigation, page scrolling, tab scrolling.
Allow to redirect (a.k.a. "remail") mail messages to other recipients.