Aseprite is a very popular and highly recommended program designed for pixel art. Well worth the $ 15 price for the final software. But those with some technical skills will be happy to know that Aseprite is available for free if you're willing to compile it yourself. Many artists love the simplified interface and the aesthetic of pixel art facile. It is a lightweight yet fully capable program that is extremely easy to learn. Aseprite is now popular for good reason. It comes with features like onion skinning - the ability to overlay frames before and after what you're working on - that make animation a breeze. And the timeline itself is very accessible for beginners. Aseprite can also automatically convert fonts to pixel art, which is very useful for game development and UI design. There is a wrapping tool that makes it insanely easy to draw tiles so that they repeat on the edges. This is a big problem in pixel art. Aseprite has some of the best sprite sheet exporters I've seen in any software, making it a must-try for those serious about creating pixel art for video games.