The current version of Aseprite on GitHub is that exact one as well, since all new features have been developed in the private repo afaik.
Apart from probably being behind on newer features that came out since Aseprite went closed source, it had minor fixes and improvements although it is 99.9% the same. I think they were planning rewrite to modernize the fork a bit, but it seems it hasn’t gone far.
I hope this clarifies stuff to consider when choosing what tool to use. I’ve been using it for basic spritesheets and animations and haven’t found a single difference tbf.
One thing that I would like to do is be able to modify/create sprites 2D sprite. On a game I am creating I have a base sprite with a number of actions that I found on itch.io, but, there are two actions that I would like to create:
climbing a ladder
wallclimbing
with two/four frames with each.
But I don’t know which tool would be best. I am no artist but I have modified made things I needed before (not great), but, never an animation. I don’t know what tool I need. Would a photoshop tool be required or would something else be more appropriate? I’ve had a quick look at that Aseprite and it looks like it does it but don’t know which is the best way to go.
Any program with pixel art tools and animation playback should be sufficient, Photoshop, Asesprite/Libresprite, Krita, GIMP… maybe not GIMP, I remember animating in it always felt a little janky lol.
Asesprite is the most simple and ready out-of-the-box. In Krita and GIMP you have to configure them a bit first for pixel art (turn off anti-aliasing on any tool that has it so you don’t get blurriness), but I think that’s the same in Photoshop.
I’d just download them or watch a video on animation/pixel art in each program and see what looks best to you