What library or service to use to show recommendations?

Question

Machine learning

Good afternoon,
There is a site similar to habrahabr, users publish their materials and I want to issue a list of topics for each topic that might still be interesting.
What data is in the input:
Categories to which the topic belongs (hubs in the terminology of habr)
Title and text of the topic Topic
author
List of all users who liked the topic (the average topic has about 50 likes, the most popular has about 100 likes)
The list of all users who have checked in comments (about 50-100 comments for each topic)
We can collect data on which topics and in what sequence each site visitor viewed.
Topics have no tags (did not justify themselves)
I would like to increase the browsing depth on the site and therefore it is planned to add a list of similar topics to the end of each review.
What library or service can be used to do this?