MapWriter Mini Map

In game mini map mode (circular map mode enabled in map GUI options menu)

In game full screen GUI.

Zooming out to see the world.

Features:

• In game mini-map for multiplayer and singleplayer.
  
• Exploration progress is saved as you wander the world.
  
• Full screen map GUI allows you to zoom out and view everywhere that you have explored.
  
• Set waypoints by right clicking, pan map by click dragging, and zoom with the mouse wheel in full screen mode.
  
• Rotating circular mini map mode can be enabled in the options menu.
  
• Entire map can be written to PNG images.
  
• Explored chunks are also saved in Anvil format from multiplayer servers, so you can view the world using tools such as Eihort.
  
• Short range underground mode shows air, water and lava around the player.
  

For installation instructions, usage instructions, previous versions and more see the main forum post here:
MapWriter on MinecraftForum.net

Source code can be found here:
MapWriter on GitHub