1.aseprite / asepriteAnimated sprite editor & pixel art tool (Windows, macOS, Linux)animationpixel-artgraphicsanimated-spritesspritesheetgif+9 moreC++No license41K total9.4K forks+2,208 starsfrom 38,354 · score 7.70
2.Rangi42 / tilemap-studioA tilemap editor for Game Boy, Color, Advance, DS, and SNES projects. Written in C++ with FLTK.tilemaptilemap-editorgame-developmentgameboygameboy-colorgameboy-advance+10 moreC++Other license539 total46 forks+13 starsfrom 525 · score 2.64