Using different computers at work and at home prompts me to look for a way to export firefox extensions from one computer to another. Currently I am using 30+ extensions @ work, but I’ve only gotten around to install a handfull @ home.
Now two extensions will let you export/backup your extensions (FEBE) and even package your extensions in .xpi files for easy sharing with others (CLEO) – go have fun 
If you need proof that it works go see my firefox extensions. Here I also made a test package of my favorite firefox extensions for you to download.
History:
UPDATE 3:Ashley left wonderful information, linkting to a couple of extensions that will backup firefox themes and extensions.
Update 2: I’ve started to map all extensions and possible solutions to export firefox extensions on this page.
Update: MozBackup only supports backup for predifined extensions… The site invites users to ask for other extensions to be imported, but there’s quite a gap between the existing list to my list.
The solution would be some kind of export function for extensions. Googling leads me here , but I’d rather have a list of urls to the various extensions’ locations and then install them from their sources.
Anyhows MozBackup seems to be the best option at the moment, but as it is a program running on my laptop, I’m not too keen on that solution.
(actually, I found MozBackup via this site – which is in turkish, I think)
“I’d rather have a list of urls to the various extensions’ locations and then install them from their sources.”
Here ya go: https://addons.mozilla.org/firefox/421/ or http://www.mrtech.com/extensions/local_install/index.html.
The main purpose of the extension is to be able to manage your extensions, themes, and plugins locally. But I don’t use it for that. It has so many more features, such as producing a list of your extensions, themes, and plugins in html (very handy) or text. You can also restart firefox (no need for a separate extension), edit various firefox config files, fix broken extensions or extensions that were deleted and still show, and much more. Even if you use just the config export for extensions,plugins, and themes, and the restart, it’s worth having.
Here is two programs that let you back up your extensions and addons. You can get them packaged into install files to reinstall them on your other computer. I hope this helps. :]
https://addons.mozilla.org/en-US/firefox/search?q=febe&status=4
Ashley,
Will update posts immediately.
that sure looks like my question has been answered
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Thank you,
You save my day !
I was looking for those kind of extensions because I need to reinstall mt Linux platform.
Thank you so much… It was just what I needed.