FastStone Image Viewer might be a bit more popular than Gallery. We know about 1 link to it since March 2021 and only 1 link to Gallery. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Gallery but dunno if it's still developed. I think the OS patches will still be current though. http://galleryproject.org/. Source: over 2 years ago
And also this " faststone.org" that gives me this error:. Source: almost 2 years ago
Piwigo.org - Manage your photo collection with Piwigo. Piwigo is open source photo gallery software for the web. Designed for organisations, teams and individuals.
XnView MP - XnView is a free software that allows you to view, resize and edit your images. It supports more than 500 different formats!
PhotoPrism.app - PhotoPrism® is an AI-Powered Photos App for the Decentralized Web. It makes use of the latest technologies to tag and find pictures automatically without getting in your way. You can run it at home, on a private server, or in the cloud.
IrfanView - IrfanView ... one of the most popular viewers worldwide.
Lychee by Electerious - Lychee is an open-source, free software program for self-hosted photo management. It can be installed on the user's own server or website. The software permits the uploading and management of photos and also makes sharing photos very easy.
ImageGlass - You can use Image to view your digital images and photos of many different formats.