1. TitanPad/EtherPad http://www.titanpad.com Free 64 simultaneous users for editing Synchronized editing Unlimited user account Chat Store different revisions Import/export in Word, HTML, PDF and more Security for public and private users Easy to use Sharon Yang, Rider University, yangs@rider.edu

2. Primarypad http://primarypad.com Free (paid version with more functionalities available) Synchronized editing Refined user interface Each author has a different color More formatting functions Chat available Export into HTML, PDF, Word, plain text and more Multiple pads/documents for collaboration Easy to use Spell checker Version progress Slider to view how the doc evolved over time Sharon Yang, Rider University, yangs@rider.edu

3. MixedInk www.mixedInk.com Free (paid version also available) Have an individual domain/URL Multiple projects, each with associated co-authors Synchronized editing Include project starting/ending dates/deadline Author tracking by colors Peer evaluation or rating Real time suggestions Top version Not easy to use No chat Sharon Yang, Rider University, yangs@rider.edu

4. Draft https://draftin.com/ Company/developer: Nathan Kontny $3.99 per month or $39.99 per year Synchronized with Dropbox, Google Drive, and more Basic editing such as bold, italic, footnotes Different revisions Accept or reject revisions Import from Word, URL, HTML, Dropbox Statistics about the writing such as the most productive time of the day, number of words per day, per hour, etc. Paid editing/robot editing Mail Sharon Yang, Rider University, yangs@rider.edu

5. Draft https://draftin.com/ Company/developer: Nathan Kontny $3.99 per month or $39.99 per year Synchronized with Dropbox, Google Drive, and more Basic editing such as bold, italic, footnotes Different revisions Accept or reject revisions Import from Word, URL, HTML, Dropbox Statistics about the writing such as the most productive time of the day, number of words per day, per hour, etc. Paid editing/robot editing Mail Sharon Yang, Rider University, yangs@rider.edu

6. Other Collaboration Tools Google Docs (free) Zoho Productivity Apps (free) MS SharePoint (paid tool) Sharon Yang, Rider University, yangs@rider.edu