Saving images for web/email/other media with the best compression ratio and quality is a difficult task if you don’t have the right tools.
Photivo is a multi platform photo processor for RAW and bitmap images with 16 bit precision.
G'MIC is a full-featured open-source framework for image processing, distributed under the CeCILL free software licenses (LGPL-like and/or GPL-compatible).
Stich Panorama is a plug-in for the GNU Image Manipulation Program (GIMP) which takes digital images and overlays one atop the other to make a panorama.
With BIMP you can apply a set of manipulations to an entire group of images! It provides an easy to use interface and a lot of batch functions.
GIMP Beautify is a set of GIMP plug-ins for quickly and easily beautify photo.
A set of plugins for the GIMP image editing app.No screenshots yet
It is a free, open source frontend to the Liquid Rescale Library, which provides an implementation of the Seam Carving algorithm.No screenshots yet
GimpLensfun is a Gimp plugin to correct lens distortion using the lensfun library and database.
AKVIS Chameleon is an efficient masking software for photo collage and montage creation. It is fun to use and makes the process easy and entertaining.