All paper puzzle genres using the kudamono editor are categorised here, by theme then type. Already supports more than 300 kinds of puzzles!
Authors like Erich Friedman and Arvi Teikari (Hempuli) are represented, alongside many authors from Japan and overseas. Everyone can make a puzzle!
Check the Paper Puzzle Masterlist, listing puzzle genre lists, paper puzzle blogs, portfolios and archives, online and paper publications, plus setting interfaces, guides and automatic solvers: https://pedros.works/paper-puzzle-masterlist

I discovered it by playing Limbs by Blaž Urban Gracar

You solve puzzles by drawing straight lines between points on the Grid.
Lineon is a work in progress. Currently at version 0.7.

Author dedicated website: https://www.blazgracar.com/

Upload an image (.jpg, .png), enhance using AI, adjust DPI, resize and download the final result (ESRGAN)

Slow but free, unlimited, and produces really great results!

Outil permettant la mise à l'échelle de n'importe quelle image de style "anime", par le biais de réseaux de neurones convolutionnels. Fonctionne également sur les photos.

Open-source: https://github.com/nagadomi/nunif