Sketch - Professional digital design for Mac.
Piwigo.org - Manage your photo collection with Piwigo. Piwigo is open source photo gallery software for the web. Designed for organisations, teams and individuals.
Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.
novaGallery.org - Beautiful php image gallery - easy to use, with modern responsive design, private mode, themes, languages
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.
PhotoStructure - PhotoStructure is a complete photo and video management application designed for the whole family.