There are many alternatives to Aseprite for Mac if you are looking for a replacement. The best Mac alternative is Piskel, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Aseprite and 13 are available for Mac so hopefully you can find a suitable replacement. Other interesting Mac alternatives to Aseprite are Pixelorama (Free, Open Source), Grafx2 (Free, Open Source), LibreSprite (Free, Open Source) and Marmoset Hexels 3 (Paid).
Tilesetter is a tileset generator & map editor tool - Create your whole tileset instantly. Generate complete tilesets from base images. Build and export levels directly to Unity, Godot and GameMaker Studio 2.