Dia - Dia is a GTK+ based diagram creation program for GNU/Linux, MacOS X, Unix, and Windows, and is released under the GPL license.

Demandbase - Bizo

draw.io - Online diagramming application

Triblio - Triblio is an account-based marketing software that enables marketers to personalize multichannel campaigns to reach their target audience.

yEd - yEd is a free desktop application to quickly create, import, edit, and automatically arrange diagrams. It runs on Windows, Mac OS X, and Unix/Linux.

6sense - 6sense is a B2B predictive intelligence engine for marketing and sales.