Mepper is a general purpose 2D tile-based game map editor. It supports several types of game maps. Mepper supports read/write map/resource using plugins, transit terrain automatically. Proposals/bugs please visit: http://groups.google.com/group/mepper
A completely open source 2D MMORPG engine, written in C++ using SDL. Designed for beginner game developers, with little to no knowledge of game programming. Capable of producing multiplayer games with similar graphics to early Final Fantasy games.