Google Contacts - Google Contacts is Google's contact management tool that is available in its free email service Gmail, as a standalone service, and as a part of Google's business-oriented suite of web apps Google Apps.
Documize - Enterprise-grade wiki and knowledge management platform
Backup SMS by Piandro - Backup SMS is an app by Piandro that allows you to choose the desired conversation or text message to add it to the backup list to save it for later use.
HackMD - Fast and flexible, real-time collaborative markdown, inspired by Hackpad.
Open Contacts - Open Contacts is an advanced address book program for managing contact info of individuals and...
ReadTheDocs - Spend your time on writing high quality documentation, not on the tools to make your documentation work.