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
Hypothes.is
Description: Hypothes.is is a free, open-source web annotation tool that allows users to add annotations to any webpage. Users can highlight text on a page and add comments publicly or privately. It facilitates group discussions and back-and-forth conversations around online content.
Type: software
Pricing: Open Source