Add N Edit Cookies
Add N Edit Cookies is a Firefox extension that enables users to manage cookies, including adding new ones.
It can be seamlessly set up and configured, even by less experienced users.
In order to complete the very rapid installation procedure, it is required to restart Firefox.
So, you can view a list of all currently installed cookies (namely website and cookie name) and delete any selected ones.
If you want to add a new cookie to the list, all you have do is enter a name, content, domain, path and connection type to send it through (any or encrypted only), as well as specify the expiration date (custom, end of session, or new).
When it comes to editing cookies, you can ask Add N Edit Cookies to show the "Delete Confirmations" panel. Other options include a select-all function and selection invert. Plus, you can refresh the cookie list. There are no other notable options provided through this tool.
Add N Edit Cookies does not burden Firefox, as it requires a pretty low amount of CPU and RAM to work properly. We have not come across any issues throughout our evaluation, as the web browser did not hang, crash or pop up error dialogs.
The only downside to Add N Edit Cookies is that it has not been updated for a very long time, and it does not offer support for later Firefox editions. Otherwise, it should please all users who want to seamlessly manage cookies in a simple and quick manner.