Diigo Alternatives for Mac OS X

Pocket is a cloud based article snippet and bookmarking platform.

Raindrop.io syncs bookmarks into the cloud and makes them beautiful as well as easy to search.

ScrapBook is an extension for the Mozilla Firefox web browser which adds enhanced scrapbooking, page saving, bookmarking, and notetaking functionality.

Shaarli is a personal, minimalist, super-fast, database free, bookmarking service.

SemanticScuttle is a social bookmarking tool experimenting with features like structured tags and collaborative tag descriptions.

lumio is an online content organizing platform.

Tizmos for Teachers is a personalized page for teachers that allows them to easily share online resources with students and other teachers.

Hypothes.is is a web-based annotation tool for websites.

Fetching is a new kind of bookmarking app.

scrible is a research platform for school and work.