SmartEiffel is the GNU Eiffel Compiler. It is intended to be a complete, though small and very fast, Eiffel compiler. The current distribution includes an Eiffel to C compiler, documentation tools, a pretty printer, and various other tools including an Eiffel debugger. It also includes a large library of classes distributed under the terms of the MIT/X Consortium License. Eiffel is an advanced object-oriented programming language that emphasizes the design and construction of high-quality and reusable software.
EWS is a library implementing a small windowing system and toolkit to be embedded in multimedia applications. It runs over SDL, and supports real-time animations, alpha-blending, and completely customizable presentation. It is written in Eiffel and has an simple and extensible object-oriented API.