Papilio is an open-source FPGA project intended for education, hobbyists, engineers, or anyone interested in learning Digital Electronics in a friendly community. It offers FPGA development boards and add-on application modules called "Wings", that makes a easy to learn platform for beginners, and powerful design and prototyping tool for engineers.

This is a proposal for a structure and build environment for FPGA projects that is simple to maintain, and designed to integrate well with version control software.