Table 1.

Comparison of related software.

Name	Search	Registration	Visualization	Comparison	Atlas	Extendible
JAtlas Viewer	None	None	Single 3D image and surface view; oblique image view; segmented surfaces	None	View labels as text and segmented color; label selection; hierarchy view;	No
MIPAV	None	B-spline; Landmark; Cost optimization	3D and orthogonal views; oblique view; volume rendering	Juxtapose Image sets (no over- lay); Synchronized view	None	PlugInAlgorithm; PlugInFile; PlugInView
Slicer	QueryAtlas Module (publication search only)	Linear Module; Register Images Module	3D and orthogonal views; oblique view; volume rendering	Overlay image sets; view image sets together in 3D space	Overlay labels as image (only label ID available)	Modules

Comparison of cross-platform, free open-source software for search, registration, image comparison, atlas viewing, and extensibility features.