Diigo

still relevant in 2021...
the sad thing: development is stalled, there is still support but no new features for years. the good thing: even though development is stalled, this is still the best bookmarker/annotation tool/highlighter on the market. it just works great. better than hypothesis or memex (diigo is just faster, can handle 10k items without slowdowns, and the highlights presentation is better more compact. Liner's highlights are somewhat similar). It can save webpages, images, pdfs, import kindle highlights, works great with ifttt.

I have been using free version for 9 years.
Unfortunately there is no free (windows + android) alternatives with better features.

This review has two parts, positive and negative, but it is mostly lean towards negative side for apparent reasons.

Positive:
Diigo lets you:

• have multiple colors in your highlights
• have private or public annotation
• organize your bookmarks in your profile
• have native browser extensions (good bye bookmarklets)
• have native Android app
• cache web pages to have what you annotated regardless of the website's update
• take screen captures
• share your annotations with a group of users
• annotate PDF from your web browser and save it on their server (PDF + annotations)

Now the negative side which forced me to stop paying them to be a premium user:

I used it for about a year or more and I was a premium user, the site was mostly functional and it was growing with acceptable pace until December 2014 that they announced a feature called "Outliners" as a new version of the features they had as "Lists".
Outliners were (and at the moment are) very buggy, ugly and in practical as you can see in the following forum discussion in their website support section:
http://feedback.diigo.com/forums/76211-ideas/suggestions/6803419-make-outliners-optional-and-return-lists-as-option

Here are the reasons why I say Diigo support team is bad:

• Dictatorship: The Diigo team forced users to switch to Outliners. This caused loss of user data and annotation order.
• Irresponsibility: Users (mostly premium users) asked Diigo to let them know about the progress of developing Outliners but they never replied (refer to the discussion link)
• obstinate: stubbornly refusing to answer users, stubbornly refusing to read users suggestion to ease the conversion and progress of moving to Outliners. (refer to the discussion post)
• Poor support: every few months, they add a feature to their website and specially the Outliners section but bug reports are piling up without any action taken by the devel or support team.

The hilarious part was premium users was paying Diigo and also trying to work out a solution and designing new features for FREE (!!) and yet Diigo team was just ignoring them and draining money out of our pockets.

Currently I'm trying to test multiple other services:
Hypothes.is
Annotateit.org
annotary.com
Scrible.com

The first two are lacking so many features and extremely ugly. The two latter ones are more closer to Diigo concept and so far I'm trying to decide which one is better to stick to it.

I thought i could save bookmarks but cudt

> Please note: Diigo is developed by a Chinese team ? headquartered in Chengdu, Sichuan, which involves privacy risks.
Company Information: https://www.qcc.com/firm_63FM1ZF.shtml

Limited to 500 bookmarks for FREE users.

I joined way before they ever imposed a limit, so I have over that amount and I'm not sure if I actually can access them all or not, as I dont use the app as much anymore. But since I'm looking for a good way to merge everything across multiple devices, I can't worry about them not allowing new bookmarks from showing up. I can't trust it will all work, now with those limitations placed.

I don't know how the Diigo team could take a perfectly good application and ruin it with something as useless as Outliner. I've been waiting for an alternative, but no one worthwhile has an Android app yet.