Some online note services to consider are Evernote and Padlet, both of which are used by students, teachers and business professionals. Evernote offers a free and paid service and can be downloaded to any mobile or smart device as well as to any desktop computer for immediate syncing, sharing and updating. Padlet, a subscription based service, provides file sharing and editing, Google app integration and a host of other robust features.
Online note services offer ways to take notes on ideas for several things and is a chosen source for college students who may go from a mobile device to a desktop computer. Notes taken during class or studies can be synced to any device so it can be accessed later. Spaaze offers an online sticky note service for teachers and students for grabbing content from the Internet and posting it to their own online cork board.
Other online note services include Jjot and Ubernote that offer a free and paid subscription. Both services offer mobile note taking and social communication options through Twitter.
Penzu offers private note taking for free for online diaries and personal journals. Penzu can be used to create to-do lists and other things that users can consider.