When comparing Hypothesis vs Tagpacker, the Slant community recommends Hypothesis for most people. In the question“What are the best browser research plugin or extension for bookmarking and note taking?” Hypothesis is ranked 3rd while Tagpacker is ranked 5th. The most important reason people chose Hypothesis is:
Hypothesis is completely free and open source, its source code is hosted in GitHub.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Open Source
Hypothesis is completely free and open source, its source code is hosted in GitHub.
Pro Everything can be searched through
Searchable stream of annotations, replies, and email notifications.
Pro Private or public
You can work in private groups and then publish, keep annotations private, or make it public from scratch.
Pro Tags
You can sort by tags, which makes it far more powerful.
Pro Lets you see public & private annotations on that webpage
Helpful to see what people thought or see useful references they might have left. Useful for group collaborations as well (research groups, book clubs, class study groups, etc)
Pro Chrome browser extension works on Brave browser
Most (maybe all) Chromium-based browsers let you use Chrome browser extensions.
Pro Chrome browser extension
Has browser extension for Chrome, which makes the job of annotating web pages even easier.
Pro Unique URLs for each annotation
You can link directly to an annotation.
Pro 100% free (at the moment)
The company earns (enough) money with affiliate links, therefore there is no need for a purchasable pro membership.
Pro Auto tagging
It makes tag suggestions based on your tags already used
Pro Follows strict privacy rules
Because it is located in Germany, the company has to follow very strict rules regarding privacy.
Pro Automate tasks with Zapier
Automating tasks with Zapier.
Pro API
Programatically access links and tags.
Pro Clean, efficient UI
Pro Date
It saves the date when the bookmark is added
Cons
Con No browser extensions apart from Chrome
Allegedly, one can use bookmarklet instead, but in Firefox it works only for some of websites.
Con Seems under development
Too many rough edges and/or bugs as you use it. For example, you have to keep logging in every time you want to add a page using the chrome extension. There are ways to add annotations on the mobile too, but way too buggy. Hopefully they fix these problems soon. Very good idea; poorly implemented.
Con Annotations are for text only, not images
Con Uses affiliate links, which can be seen as an invasion of privacy
Affiliate links are usually not only a way to earn money with advertisement. They also include generating user profiles, which could be seen as a big privacy issue.
Con Only list view available
