Icy - Icy is an open community platform for bioimage informatics
ImageJ - and Other Health Care
Promega Colony Counter - Is the tedium of squinting over agar plates counting bacterial colonies getting to you?
3D Slicer - Slicer is a community platform created for the purpose of subject specific image analysis and...
Fiji - Fiji: A batteries-included distribution of ImageJ.
GIMP - GIMP is a multiplatform photo manipulation tool.