Scrapbox - A new style of note-taking that lets you create, discuss, and learn together in one self-organizing space.

Raindrop.io - All your articles, photos, video & content from web & apps in one place.

Unit Notes for iOS - A simple and powerful note-taking app.

LinkAce - A selfhosted bookmark manager with advanced features.

Doceri - Doceri is a scalable suite of products that allows a teacher or presenter to control a computer's desktop, to control audiovisual technology, and to annotate any presentation in real time with the Apple™ iPad™.

GGather - Effortless and organized way to store and share your bookmarks with the right mix of features.