Evernote's mission is to help individuals and groups remember everything, turn ideas into action, and work effortlessly together. Their Android app gives people the tools they need to get organized, take and save notes, and collaborate with others.

Squid allows users to take handwritten notes naturally on various devices. With Squid you can write just like you would on paper using an active pen, passive stylus, or your finger and easily mark up PDFs to fill out forms, edit/grade papers, or sign documents.