Bigredit is a graphical editing tool for designing and constructing bigraphs. The name is an abbreviation of "bigraph editor". Bigredit uses the Eclipse Graphical Editing Framework.

Bigredit Features:
1. Create well-formed bigraph diagrams.
2. Customize nodes and edges with visual styles.
3. Perform bigraph composition operations.
4. Define and apply reaction rules.
5. Save and load bigraph diagrams in XML format.
6. Export to BMP, PNG and PDF formats.

The license of this software is Free, you can free download and free use this graphing software.