Funnl - Generate B2B sales meetings that close
Dia - Dia is a GTK+ based diagram creation program for GNU/Linux, MacOS X, Unix, and Windows, and is released under the GPL license.
Lattice Engines - Lattice provides companies with tools that help drive predictable marketing and sales performance
draw.io - Online diagramming application
Salesflare - Simply powerful CRM. Automates your data to build better relationships and make more sales.
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.