Based on our record, Hypothes.is seems to be more popular. It has been mentiond 46 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Hypothesis https://web.hypothes.is/ is pretty good at keeping notes on PDF. Normally it anchors the annotations for any url but I believe that for PDF is also doing some extra checksum magic to uniquely identify the PDF and apply the annotations. Furthermore you can have collaboration features such as group annotations. Useful for classes or science labs... - Source: Hacker News / 1 day ago
Tools like https://web.hypothes.is exist and have a decent number of installs. The hard part of a generic third-party commenting tool is creating the right social context for it to actually be useful. Hypothesis for example is mostly used via its integration into online learning platforms, where that context already exists. - Source: Hacker News / 3 months ago
I honestly can't imagine not using extensions. I'm 39 and have been on the web since Netscape etc in the early 90s and I honestly care more about the extensions than I do anything the browser actually does. Like, if there were no extensions I don't think I'd care at all if I used Firefox, Chrome, Opera, etc. But Chrome and Firefox have this massive, massive ecosystem of productitivy improving extensions. I'll give... - Source: Hacker News / 3 months ago
I think https://web.hypothes.is/ would be of interest to you. - Source: Hacker News / 5 months ago
Https://web.hypothes.is/ already exists for collaborative commentary on practically anything web based. So there is a market of sorts. Source: 10 months ago
Diigo - Diigo is a powerful research tool and a knowledge-sharing community
Marketing 360 - Marketing 360® is a powerful marketing and website platform built for any size brand. It's fully managed and has everything a brand needs to drive beautiful marketing and sales.
Weava - Workspace to highlight, organize & collaborate on your research articles.
Bitrix24 - Bitrix24 is a free (for small businesses) social enterprise platform. It is a united work space which handles the many aspects of daily operations and tasks. Create your own social intranet in minutes!
LINER - LINER AI Copilot is currently powered by ChatGPT/GPT-4, Google Search Engine, and information from high-quality highlights of an enormous number of users from all around the world.
SendX.io - SendX (https://sendx.io) provides remarketing and retargeting tools for web businesses. You can use popups, landing pages, email, web push notification, automation workflows and FB / Google retargeting to drive more revenue.