In case you're involved in developing for the Atari ST, you may find my curated list of dev resources handy. If you have any useful links i can add, please let me know or create an issue in the repository! https://github.com/sandord/atarist-dev-resources
@sandor might want to add https://github.com/mmuman/gfalist/ (I just fixed 64bit build)
GitHub - mmuman/gfalist: Reads tokenized GFA BASIC version 3.x source files (.GFA) and converts them to human readable ASCII listings (.LST).

Reads tokenized GFA BASIC version 3.x source files (.GFA) and converts them to human readable ASCII listings (.LST). - mmuman/gfalist

GitHub
@mmu_man Thank you! I'll add it to the list. I'm quite short of GFA links yet so keep them coming ;-)
@sandor I think @Rajah has quite some GFA code around
@mmu_man @sandor I'm writing some GEM tools for gamedev, but Sandor lists more dev-docs than softwares.
@Rajah @mmu_man Going by the sound of it, I think they are suitable to be listed.

@sandor @mmu_man

P2SM: https://ptonthat.fr/p2sm/ (sprites assets preparation, pixel art drawing)
MapEdit: https://ptonthat.fr/mapedit/

See the yt showreel and snapshots in the comments/changelog.

P2SM | Carnet numérique de Rajah Lone