NBTExplorer

Free plan LinuxMacWindows

What NBTExplorer is

NBTExplorer is a graphical editor for NBT data, with a focus on Minecraft game files. It reads and writes standard NBT, schematic, and uncompressed NBT files, along with Minecraft region, Anvil, and Cubic Chunks region files. Region editing includes deleting chunks. For some mods’ nonstandard short-array tags, the editor can read, update, and delete them. The Windows release 2.8.0 adds support for NBT long-array tags.

NBTExplorer is available for Windows, Linux, and macOS. The Windows requirements are Windows XP or later and .NET Framework 2.0 or later. Linux use requires a recent Mono runtime, version 2.6 or later, plus mono-core and mono-winforms or equivalent packages. A separate Mac version has a native interface and lists OS X 10.8 Mountain Lion as its minimum. If that version does not work, the Windows version can run on Mac with Mono.

The project also includes NBTUtil, a command-line utility for inspecting and changing NBT data. It covers a smaller set of tasks, including printing nodes, editing scalar tag values, and setting list contents. NBTExplorer is licensed under MIT, which permits use, modification, distribution, sublicensing, and sale subject to the license conditions.

Who it suits

NBTExplorer suits Minecraft players and modders who need to inspect or edit NBT, schematic, or supported region files. It also fits users who want a command-line utility for basic NBT inspection and changes, or who need an editor on Windows, Linux, or macOS.

What it does well

Reads and writes standard NBT, schematic, and uncompressed NBT files.
Supports Minecraft region, Anvil, and Cubic Chunks region formats.
Can delete chunks from region files.
Includes NBTUtil for command-line NBT tasks.
MIT License permits modification and redistribution subject to its conditions.

What to know first

Windows use requires Windows XP or later and .NET Framework 2.0 or later.
Linux use requires Mono 2.6 or later and compatible packages.
NBTUtil supports only a subset of the editor’s functionality.
Nonstandard short-array tag support is limited to reading, updating, and deleting.

Limits

The free plan is listed as free, with no paid plans or usage limits stated. NBTUtil covers only a small subset of the editor’s functions, and nonstandard short-array tags have read, update, and delete support only.

Plans

Plan	Billed and limits	Price
Free and open-source	No paid plans or usage limits stated	Free

As github.com lists them, read 8 Oct 2026. The maker's own page has the final word.

Getting started

Open the NBTExplorer project website.
Choose Windows, Linux, or macOS.
On Windows, meet the listed Windows and .NET Framework requirements.
On Linux, install a recent Mono runtime and mono-core and mono-winforms or equivalent packages.
On Mac, use the native Mac version, or run the Windows version with Mono if the Mac version does not work.
Use NBTUtil from the project for its command-line inspection and editing tasks.

Verdict

Choose NBTExplorer if you need a free graphical tool for Minecraft NBT and supported region formats across Windows, Linux, or macOS. Look elsewhere if you need terrain editing, which is not among its stated capabilities, or broader command-line functionality than NBTUtil provides.

Questions

How much does NBTExplorer cost?

The Free and open-source plan is free. No paid plans or usage limits are stated.

Which platforms does it support?

NBTExplorer supports Windows, Linux, and macOS. A separate Mac version has a native interface.

Which Minecraft data formats can it edit?

It reads and writes standard NBT, schematic, uncompressed NBT, Minecraft region and Anvil, and Cubic Chunks region files.

Is NBTExplorer open source?

Yes. It is licensed under the MIT License, which permits use, copying, modification, distribution, sublicensing, and sale subject to its conditions.

Does it include a command-line tool?

Yes. NBTUtil can inspect and modify NBT data, with functions including printing nodes, editing scalar tag values, and setting list contents.

Facts from NBTExplorer's own pages

Additional format support: Version 2.7.6 release notes describe deleting chunks from regions and limited read, update, and delete support for nonstandard short-array tags. · github.com, 8 Oct 2026
Chunk editing: Version 2.7.6 added the ability to delete chunks from regions. · github.com, 8 Oct 2026
Command-line tool: The project includes NBTUtil, a command-line utility to inspect and modify NBT data. · github.com, 8 Oct 2026
Command-line utility: The 2.7.0 release introduced NBTUtil.exe, a command-line utility for inspecting and modifying NBT data with a limited subset of the editor’s functionality. · github.com, 8 Oct 2026
Latest release: The releases page lists version 2.8.0 for Windows and says it adds support for NBT long array tags. · github.com, 8 Oct 2026
License: The project is licensed under the MIT License, which grants permission to use, copy, modify, distribute, sublicense, and sell copies subject to its conditions. · github.com, 8 Oct 2026
Limited tag support: Version 2.7.6 added limited support for nonstandard short-array tags used by some mods, with read, update, and delete support only. · github.com, 8 Oct 2026
Linux: The README says NBTExplorer is compatible with recent Mono runtimes, version 2.6 or later, and requires mono-core and mono-winforms or equivalent packages. · github.com, 8 Oct 2026
macOS: A separate Mac version with a native UI is available; the README lists OS X 10.8 Mountain Lion as the minimum supported version. · github.com, 8 Oct 2026
Maker: The GitHub profile identifies jaquadro as Justin Aquadro, a professional software developer with interests in games, game tooling, and Minecraft modding. · github.com, 8 Oct 2026
NBT formats: It reads and writes standard NBT, schematic, uncompressed NBT, Minecraft region and Anvil, and Cubic Chunks region files. · github.com, 8 Oct 2026
NBTUtil limits: The release notes say NBTUtil supports a small subset of NBTExplorer functionality, including printing nodes, editing scalar tag values, and setting list contents. · github.com, 8 Oct 2026
Purpose: NBTExplorer is an open-source graphical editor for common NBT data sources, mainly intended for Minecraft game data. · github.com, 8 Oct 2026
Read and write: It reads and writes standard NBT files, schematic files, uncompressed NBT files, Minecraft region and anvil files, and Cubic Chunks region files. · github.com, 8 Oct 2026
Security information: The repository security page does not provide security or compliance details in the opened page. · github.com, 8 Oct 2026
Windows: The README lists Windows XP or later and .NET Framework 2.0 or later as requirements. · github.com, 8 Oct 2026
Windows fallback on Mac: The README says the Windows version can run on Mac with Mono if the Mac version does not work. · github.com, 8 Oct 2026

Where NBTExplorer stands on Freedom251

Minecraft World Editors#19 of 35