Essential add-on for teachers !

I have been using Diigo for several years and installed the extension about two years ago. This is an absolutely amazing tool that allows me to manage web sites and document web sites, add tags and organize this information , highlight and annotate and keep all of this readily available online for use on any device, including my SmartPhone. The extension has been improved over time and made even better. I only wish I could give Diigo a 10 star rating. I would recommend this app and extension to Firefox to anyone.

Günstig und nutzbar

highlight or organize in reading,
no more delay

Great app that I use daily to organize and present content...

I cannot overstate how useful, enjoyable, and aggravation-preventing this add-on is. Very *highly* recommended.

Very usefull!!

thanks for app ok

Thank you for this app, very helpful, buy it ever month.

This is a great add-on I've been using for several years as a premium user. That said, it seems the development of the Firefox version halted or at least slowed down. The last version in Firefox is from Nov 8 2017 vs July 2018 for Chrome. I've noticed several bugs and things that do not work anymore. Judging by the ratings in both platforms it seems Chrome users are getting a better experience. This is unfortunate for me, as I like Firefox better than Chrome. My rating is in good faith for now but if they let the Firefox version die I will drop my subscription.