Based on our record, Raindrop.io seems to be a lot more popular than Followup.cc. While we know about 179 links to Raindrop.io, we've tracked only 1 mention of Followup.cc. 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.
Https://mymind.com/ is based on AI analysis of page content, or something like that. I've never been able to use their product because they require a Google or Apple account. https://raindrop.io/ apparently also has full-text search for page contents as a paid feature. I'm on the free tier and haven't tried it either. - Source: Hacker News / 11 days ago
Raindrop.io - Private and secure bookmarking app for macOS, Windows, Android, iOS, and Web. Free Unlimited Bookmarks and Collaboration. - Source: dev.to / 5 months ago
I setup Raindrop.io [1] to feed into Archivebox, mostly as an overcomplicated way to automatically submit the page to archive.org [2]. Raindrop is nice since it works in browser and as a phone app - so it truly is a single bookmarking tool. I mostly use it for search purposes, bookmarking things I may want to find again in a few years. I rarely look at my Archivebox, but it's nice to know it's there with offline... - Source: Hacker News / 5 months ago
What about https://raindrop.io/ ? Seems to do exactly what you're building. Source: 7 months ago
Raindrop.io is a bookmark manager, right? Source: 7 months ago
I'll update this if I find more. For now, this seems to be a partial solution. It's a Gmail add on (except I don't use Gmail) that adds reminders. The options when setting reminders include cancelling it if someone replies, and to remind everyone in the thread. If you combine those two, it seems like — if you use Gmail's web client and have $23/month you're dying to get rid of — a decent way to add the feature. Source: over 1 year ago
Pocket - When you find something you want to view later, put it in Pocket.
FollowUpThen - The simplest way to schedule an email reminder
Pinboard - Pinboard is a personal archive for things you find online and don't want to forget.
Gmelius - Gmelius is the first collaboration platform designed for G Suite and your company's daily tools.
Diigo - Diigo is a powerful research tool and a knowledge-sharing community
Boomerang for Gmail - Boomerang for Gmail is a Firefox / Chrome plugin that lets you take control of when you send and receive email messages.