Does Resprite support tileset or tilemap editing?

Yes. Resprite supports tileset and tilemap workflows starting with DA 1.32.0 and iOS R59, including tilemap layers, tileset management, terrain rule editing, terrain painting, linked tilesets, and tile animation.

Resprite can import and export Tiled-compatible map and tileset formats, including .tmx map files and .tsx tileset files.

For full usage details, see Tilesets and Tilemaps and Tiled Map Compatibility.