Momento for Hacker News is a free Chrome add-on developed by Swaglord Inc. It falls under the category of Browsers and specifically the subcategory of Add-ons & Tools.

This add-on provides users with the ability to tag and organize users on Hacker News (HN). With Momento, users can easily add tags to HN users, allowing them to remember all the cool people they come across on the platform. This feature is particularly useful for those who frequent HN and want to keep track of certain individuals or remember their interactions.

In addition to user tagging, Momento also offers the option to keep track of where users work, serving as a counter-measure against astroturfing. This feature helps users identify any potential bias or hidden agendas behind certain comments or posts.

Momento for Hacker News is designed to be unobtrusive, only appearing when users choose to tag or organize HN users. It stays out of the way when not in use, providing a seamless browsing experience.

While the add-on currently does not support suggested tags or syncing, these features are expected to be added in the future updates.