While there is no shortage of powerful photo and video editing tools, most of them come with a hefty price tag or require a subscription to get started. It may discourage students, beginners, and freelancers from exploring them fully. Luckily, thanks to free, open-source tools, you don’t need to shell out hundreds of dollars to achieve stunning results.
XDA Developers have short-listed their choices in the linked article below, and explained why each has been chosen.
I’d certainly also add digiKam for photo editing. It has some very powerful features, including advanced geolocation editing, batch editing, blending of stacked images, OCR text generation, creation of calendars, creation of panoramas, RAW editing, camera control, and exporting to numerous cloud services including Flickr, Imgur, Piwigo, Pinterest, etc.
See https://www.xda-developers.com/free-open-source-tools-for-amazing-photo-and-video-edits