Alternatives to Avogadro

Energy modelling for crystal & molecular structures

Data visualization and analysis software

3D creation suite

Vector graphics editor

Free and open-source image editor

Online diagram software

GUI for the cheminformatics toolkit OpenBabel

Scientific data visualization and analysis software

Open-source image processing package

Visualisation for electronic and structural analysis

Open-source platform for visualizing and manipulating large graphs

Visualisation and data analysis for mesh-based scientific data