CollabNet Alternatives

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

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

GDPR compliant tracking without cookies! TRACKBOXX - Visitor tracking Made in Germany.

Try for free freemium €5.0 / Monthly (1 website, 1 user, 25,000 page impressions)

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.

Online diagramming application

OmniGraffle is for creating precise graphics like website wireframes, an electrical system designs, or mapping out software class.

LucidChart is the missing link in online productivity suites. LucidChart allows users to create, collaborate on, and publish attractive flowcharts and other diagrams from a web browser.

UMLet - Free UML Tool for Fast UML Diagrams

StarUML

Gaphor is a Python-based, open source, multiplatform and multipurpose modeling application for creating nice UML diagrams for documentation.

NClass is a free tool to easily create UML class diagrams with full C# and Java language support.

PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.

Lightweight, powerful, easy to use, UML tool

freemium €59.0 / One-off (Standard Edition)

Diagram Designer