PGF and TikZ

PGF/TikZ is a tandem of languages for producing vector graphics from a geometric/algebraic…

Bloom

Description and features of Bloom

Generate sequence diagrams and flowcharts at lightning speed.

An easy solution to create product flows.

Tool for efficiently building attractive diagrams.

Convert ASCII to SVG diagrams

Graphviz is open source graph visualization software. It has several main graph layout programs.

Ipe is a drawing editor for creating figures in PDF or (encapsulated) Postscript format.

LaTeXDraw is a graphical drawing editor for LaTeX.

Pierre,Chatelier,LaTeXiT

MathCast is an equation editor, an application that allows you to input mathematical equations.

UMLet - Free UML Tool for Fast UML Diagrams

You should check out Vector Paint and create some cool artwork! vector-paint.com/app

~ Simple way to view, annotate and share …

Very simple webpage with a simple textbox, a checkbox for selecting one of several languages and an…

Diagrams is a powerful, flexible, declarative domain-specific language for creating vector…

open source, multi-platform and interactive vector drawing picture editor for LaTeX and PSTricks

Xfig is a free and open source vector graphics editor which runs under the X Window System on most…