NoteAway - NoteAway is the simplest, most convenient way to take quick notes on OS X.
Freshdesk - Freshdesk is a cloud-based customer support software that lets you support customers through traditional channels like phone and email, social channels like Facebook and Twitter, and your own branded community
JustNotepad.com - A free online notepad allows you to create any text or notes in your web browser.
Zoho Desk - Industry's first context-aware Helpdesk Software
PlicPad - Shareable notepad without urls
Salesforce Service Cloud - Service Cloud integrates customer service with social networks and provides a self-service customer portal and knowledge base system.