Anvi’o is an open-source, community-driven analysis and visualization platform for ‘omics data.
Grace is a WYSIWYG 2D plotting tool for the X Window System and M*tif.
Jmol is a viewer for chemical structure data.
Lynx is a text based web browser.
Maestro is a graphic interface for Jaguar.
OpenCV is an open source computer vision library.
ParaView is an open-source, multi-platform data analysis and visualization application.
Ploticus is a free GPL software utility that can produce various types of plots and graphs.