Mtpaint!

IcoFX is an 51 awards winning icon editor. It is an all-in-one solution for icon creation, extraction and editing. It is designed to work with Windows XP, Windows Vista, Windows 7 and Macintosh icons supporting transparency.

Aseprite (previously ASE, aka Allegro Sprite Editor) is a program to create animated sprites & pixel art. Sprites are little images that can be used in your website or in a video game. You can draw characters with movement, intros, textures, patterns, backgrounds, logos, color palettes, isometric levels, and more.

Remember the good old 2D games and their beautiful sprites? With Piskel you can create your own in a few clicks.

GrafX2 is a bitmap paint program inspired by the Amiga programs Deluxe Paint and Brilliance. Specialized in 256-color drawing, it includes a very large number of tools and effects that make it particularly suitable for pixel art, game graphics, and generally any detailed graphics painted with a mouse. The program is mostly developed on Linux and Windows, but is also portable on many other platforms.

BeCyIconGrabber is a small utility to view icons and cursors of any sizes that are contained in EXE, DLL, ICL, OCX, CPL, SRC, ICO and CUR files. The icons/cursors can be saved either individually as an icon, cursor, bitmap, png file or collectively within resource libraries.

AzPainter is a full color painting program for linux. It's a lightweight tool with tablet pressure support, and provides basic functions such as selection, layers, filters. you can use it for painting, image editing, or pixel art making.

A tool for creating, editing, and converting icons and bitmaps. Supports layers, supersampling, PNG optimization, Vista icon optimization, and more.

Moai is a spiritual successor to one of the elder gods of pixel editing: Autodesk Animator. Designed to make detailed pixel work easy while preserving many of Animator's unique processes, Moai exists to bridge the old with the new. The only things not returning are the FLI/FLC and 8bpp support.

Pixelsque's goal is to be as simple as possible, while still retaining many powerful features. It works like any standard pixel art editor, with a pen, eraser, and shapes. Pinch zoom and two finger drag can be used to move around the image from anywhere. Lesser-used functions such as save/open/new, and others can be found in the menu, saving valuble screen space on phones, and allowing easy access on tablets. It fully supports all Android devices from low-end phones to high-end tablets.

JDraw is a pixel oriented graphics editor designed especially for small to medium-sized pictures used to decorate web pages. It is completely written in Java, simple to use and saves (animated) GIFs, ICOs and PNGs.

GConvert icon toolkit: create, edit, extract, manage and convert icons of any size and color depth. Full support for Windows Vista and XP icons, manage icons in ICL and DLL files, convert from/to other image formats

Create Vista icons with Toolset's Icon Editor. Locate and extract hundreds of hi-resolution, 256x256 icons in your Vista installation. Create icons for all Windows platforms. This suite of icon tools includes four integrated components that excel in their specific areas.

IconLover is a powerful, yet easy to use icon editor for making your own icons for any operating system, including Windows, Mac OS, UNIX/Linux and iPhone.

Dotpict is a simple, intuitive and effective pixel art editor designed for mobile use.