BTAExplorer is an open-source fork of the NBTExplorer NBT editor for all common sources of NBT data. It's mainly intended for editing Better than Adventure game data.
BTAExplorer supports reading and writing the following formats:
- Standard NBT files (e.g. level.dat)
- Uncompressed NBT files (e.g. idcounts.dat)
- Minecraft region files (*.mcr)
- Minecraft anvil files (*.mca)
Windows XP or later, .NET Framework 4.8 or later.