It does still work, for now Rated 5 out of 5 stars

The reason it won't install is because the listed version compatibility is wrong. There are some bugs that need fixing, I've listed those along with an easy to install XPI at http://ithomas.name/2015/urlparams/

Neither version are signed, so they won't work in Firefox 43 without messing with about: config.

No longer maintained?? Rated 1 out of 5 stars

Addon version not compatible with FF 42, Website offline :-(

Versions for FF > 3.x Rated 5 out of 5 stars

just go to http://urlparams.blogwart.com/share/downloads.php and use the "install" link...

Rated 4 out of 5 stars

Very helpful, but I'm missing a version for my FF 5.

Rated 5 out of 5 stars

Una estupenda herramienta, y digo lo mismo que cesartorres, tienen que actualizarla a la ultima version de firefox, esta es un herramienta indispensable.

Rated 5 out of 5 stars

Just visit author's homepage (http://www.urlparams.blogwart.com/share/downloads.php), download and install latest version which is compatible with FF 3.6.*
And by the way.. For me it is the second best tool for FF right after Firebug.

This review is for a previous version of the add-on (2.2.2). 

Rated 5 out of 5 stars

Just visit author's homepage (http://www.urlparams.blogwart.com/share/downloads.php), download and install latest version which is compatible with FF 3.6.*
And by the way.. For me it is the second best tool for FF right after Firebug.

This review is for a previous version of the add-on (2.2.2). 

Rated 4 out of 5 stars

Good Tool, but We need the update to FIREFOX 3.6

This review is for a previous version of the add-on (2.2.2). 

Indispensable for web development Rated 5 out of 5 stars

If you go to the url params homepage site there's a newer version, 2.2.2, that works in Firefox 3.6 for me. (I downloaded it, then double-clicked the download and chose to run Firefox.exe against it.)

This is indispensable if you're doing web development - a great and simple tool! Pair this with the Tamper Data add-on and you've got lots of power to view and edit your http params.

This review is for a previous version of the add-on (2.2.2). 

Rated 5 out of 5 stars

It is a great addon, but do you have plans to update this addon for Firefox 3.6?

This review is for a previous version of the add-on (2.2.2). 

Rated 4 out of 5 stars

Good tool!

cyrilic truble Rated 1 out of 5 stars

dont correctly work with cyrilic symbols :(
не корректно отображает и передаёт русские буквы

Rated 5 out of 5 stars

Is this great extension alive and there is plan for firefox 3.5 compatibility?

I like it very much and its very helpful for web application testing. If it will comes with XML import/export features it will be perfect.

Rated 5 out of 5 stars

Great way to see the params in POSTs! One of the first things I install when I setup up a new FF instance.

Rated 4 out of 5 stars

There is an export feature. It would be nice if you could import, too.

Rated 4 out of 5 stars

XML-Export does not work for me with FF 3.0.7 on Ubuntu 8.10.
(But you can see GET/POST data in the Net panel of firebug)

Damned sticky pluging Rated 1 out of 5 stars

Where is UnInstall? 1.3.11 don't work in sm1.1.14 (XML-parsing errors). Damned panel with error under StatusBar. Can't uninstall. You must manually edit 6 rdf-files in your profile.

PUT/DELETE Rated 5 out of 5 stars

Very useful. Would be even better if it supported PUT and DELETE for testing RESTful services.

doesn't work with 2.0a2 Rated 3 out of 5 stars

Pity, ... doesn't work with 2.0a2.

Smaller Screnshot please. Rated 1 out of 5 stars

The one you have now isn't tiny enough.....