UsersInsights - The Users Insights WordPress user plugin helps you manage your user data in one intuitive, beautiful and searchable place.

UMLGraph - UMLGraph is a professional automated drawing tool that allows the designers the declarative specification and drawing of UML class and sequence diagram.

Quantcast Measure - Quantcast Measure provides free cross-platform audience measurement for a mobile app, website, network or platform.

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.

Talkwalker - Talkwalker Consumer Intelligence Platform: built for speed of insight, ease of use, and data democratization

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