Stash.ai is a link saving and sharing service with automatic categorization of links via machine learning.
Ranked in these QuestionsQuestion Ranking
Pro Automatic categorization via machine learning.
Links are automatically assigned to basic categories like Place or Product by machine learning.
Con Android app unstable.
This application is just out of Beta, but still crashes a few times a day on Android (e.g. on Nexus 6 with Android 7).
At a total cost of $36 per year ($3/month * 12 months) this option is more expensive than other options with more features.
Con Android or Google Chrome only.
Add-ons are not available for Firefox, Safari or other common browsers.