Zoho Meeting - Free video conferencing, online meeting, desktop sharing solution from Zoho.

Google Docs - Create a new document and edit with others at the same time -- from your computer, phone or tablet. Get stuff done with or without an internet connection. Use Docs to edit Word files. Free from Google.

FileFlex - FileFlex: Access Share Stream developed and published by Qnext.

Adobe Acrobat DC - Make your job easier with Adobe Acrobat DC, the trusted PDF creator. Use Acrobat to convert, edit and sign PDF files at your desk or on the go.

Airtime - Hang out with group video, share music & videos

Wondershare PDFelement - All-in-one PDF editor