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.
• Client side (server does not need to have the mod installed).
• The areas you explore are saved and can be viewed by scrolling or zooming the map, even when you are in a completely different part of the world.
• Full screen map GUI. Set waypoints by right clicking, pan map by click dragging, zoom with the mouse wheel.
• Rotating circular mini map mode. Can be enabled in the options GUI.
• Colours for blocks automatically generated from the block's texture.
• Support for custom texture packs.
• Support for blocks added by mods.
• Biomes now coloured appropriately.
• Entire map can be written to a PNG image.
• When in the Nether the mini map shows your effective location in the Overworld. This makes placing portals easier.
• Underground map mode (vastly improved in 2.0.14).
• All block colours configurable

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 2 on GitHub