Cookiebro - With Cookiebro you can manage/filter/block browser cookies that can be used to track you online.
Cookie Quick Manager - An addon to manage cookies (view, search, create, edit, remove, backup, restore, protect from deletion and much more). Firefox 57+ is supported.
Vanilla Cookie Manager - Vanilla Cookie Manager is a Whitelist Manager that helps protect your privacy.
EditThisCookie - EditThisCookie is a cookie manager. You can add, delete, edit, search, protect and block cookies!
Cookie Manager - This Cookie Manager allows you to quickly view and edit specific cookies.
MozillaCookiesView - Alternative to the standard Cookie Manager provided by Netscape and Mozilla browsers.