darktable
Description: darktable is an open source photography workflow application and raw developer. It manages your digital negatives in a database, lets you view them through a zoomable lighttable, and enables you to develop raw images and enhance them.
Type: software
Pricing: Free
Mentimeter
Description: Mentimeter is an interactive presentation software that allows presenters to engage audiences through real-time voting, quizzes, word clouds, Q&As, and more. It works by having the presenter create interactive slides and the audience uses their mobile devices to participate.
Type: software