CollaMark is a free Chrome extension developed by collamark.com. It falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. CollaMark is designed to be the simplest tool for users to mark on the web.

With CollaMark, you can easily mark the lines or sections of a webpage that you care about. Unlike other marking extensions, CollaMark doesn't require you to tap an icon to enable the marking feature. Simply select the lines you want to mark and CollaMark will automatically detect and highlight them.

The extension stores your data on the collamark.com website for performance reasons, but it also caches the data locally in your browser. The developers are currently working on syncing features to ensure that your marked lines are accessible across different devices and browsers.

CollaMark is currently only available for Chrome, but the developers have plans to support other browsers in the future. It offers a convenient and efficient way to highlight and share important information while browsing the web.