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NMSE (No Man's Save Editor)

nmse.vectorcmdr.xyz

Free
Windows
Linux
Open source

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What it is

NMSE (No Man’s Save Editor) is an open-source desktop tool for changing No Man’s Sky saves. It can edit inventories, unlock items, adjust discoveries and create backups. Its visual inventory grid supports drag-and-drop item management, automatic stacking and sorting, while a backup picker can restore a saved copy. NMSE supports saves from Steam, GOG, Xbox Game Pass, PlayStation 4 and Nintendo Switch, and its language support covers all 16 game languages. It also supports import and export with other editors, covering practically everything. The maker says the app will remain free and ad-free. Windows users get a ZIP release; Linux has an AppImage with Wine included, and macOS has a DMG with a Wine launcher. The Linux and macOS versions run through Wine compatibility layers. The fan-made project is licensed under GPL 3.0 and is not affiliated with Hello Games. The maker points users to Discord for community help and GitHub issues for bug reports.

Good, and not so good

Supports saves from five listed platforms
Visual inventory editor with drag-and-drop
Backup picker includes restore
Free and ad-free, according to the maker

Linux version runs through Wine compatibility layers
macOS version runs through Wine compatibility layers
Fan-made project is not affiliated with Hello Games

Who it suits

It suits No Man’s Sky players who want to edit save inventories, discoveries or unlocked items across supported save platforms. Linux and macOS users should be aware those versions run through Wine compatibility layers.

NMSE offers inventory editing and backup tools for No Man’s Sky saves from several platforms. It is free and ad-free, though Linux and macOS releases rely on Wine compatibility layers.

Plans

Freead-free · desktop save editingFree
NMSEFree and ad-free · desktop save editorFree

As nmse.vectorcmdr.xyz lists them, read 15 Oct 2026.

Data plate

Price: Free to use
Free plan: Yes
Free trial: No
Runs on: Linux, macOS, Windows
Open source: Yes
Website: nmse.vectorcmdr.xyz
Account-reward limitation: Account-reward edits may require launching the game offline and editing platform settings because the game can recreate reward files at runtime.
API and SDK: The published documentation describes an internal .NET application architecture but does not document a public web API or SDK.
Backups: NMSE automatically creates the ten most recent timestamped ZIP backups for each save folder.
Bases and settlements: The editor handles base inventories, storage, settlement statistics, production, perks, corvette caches, fishing inventories and space-station data.
Build requirements: Building from source uses dotnet restore/build/test and requires the .NET 10.0 SDK with Windows or cross-compilation targeting enabled.
Community support: The project directs users to Discord, GitHub issues and Reddit for help and bug reporting.
Companions: Companion features include creature editing, custom creature building, pet-battle editing and pet-battle seed searches.
Company status: The available maker pages identify an individual maintainer and fan-made project rather than a registered company, headquarters, founding year, employee count or funding.
Checked: 15 Oct 2026

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