Icy - Icy is an open community platform for bioimage informatics
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.
GIMP - GIMP is a multiplatform photo manipulation tool.
Promega Colony Counter - Is the tedium of squinting over agar plates counting bacterial colonies getting to you?
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.
Photoscape - high quality photo editing software, that enables you to fix and enhance photos.