I've made a local first, end-to-end encrypted, auto sync bookmark extension that doesn't milk your data in any way. It's 100% private, I even don't use Google analytics on my website. Some of the reasons why I've put some work into this is:
- because I could not find something similar that doesn't milk and own my data
- to never lose a bookmark again
- to have my bookmark data encrypted in the cloud
- to have private history
- to have some extra time saving features in the extension that are for unknown reason rare to find
- more learning and experience (it's acutally quite complex to build this)
After about 4 years of using it daily on every pc I own, I found out it's a pain for me and my family when it is not installed on a browser. I thought; if it's useful for us, it might be useful for others too! So, I decided to make it available by subscription for a small fee to cover the server and other costs. I'm not really into marketing, so almost no one knows it exists. You can find it on markbook.io.