Annotary
Description: Annotary is an open-source annotation tool that allows users to add text annotations and comments to web pages, PDFs, images, and more. It has features like collaboration, private/public annotations, groups, hierarchical comments, rich text formatting, and works on any operating system.
Type: software
Pricing: Open Source
Evernote
Description: Evernote, your digital workspace for notes, ideas, and collaboration. Capture and organize thoughts across devices, create multimedia-rich notes, and collaborate effortlessly. Stay productive with a versatile tool that adapts to your needs.
Type: software
Pricing: free