Pyxel edit is a relatively new software, which is dedicated to creating pixel art sprites. Pyxel has an intuitive UI which feels familiar to other applications such as Photoshop. The tools it has makes it faster to make sprites, this is because of it’s tile set which is generated the moment a document is made. The tile set can be define eg. 10 tiles wide and 10 tiles long. This can then be used to instantly see your tiles side by side, quickly creating seamless textures.