NBTExplorer is a low-level graphical NBT data editor similar to, inspired by, and based on NBTedit. The key difference is NBTExplorer's full support for Minecraft .mcr region files, and a directory-tree interface for easily exploring multiple worlds. NBTExplorer is built on top of Substrate.
NBTExplorer can read: - Standard NBT files (e.g. level.dat) - Schematic files - Uncompressed NBT files (e.g. idcounts.dat) - Minecraft region files (.mcr) - Minecraft anvil files (.mca) - Cubic Chunks region files