Skip to content
SPECIFICTION
Get listed

NMSE (No Man's Save Editor)

nmse.vectorcmdr.xyz

Free plan Open source WindowsmacOSLinux
Visit nmse.vectorcmdr.xyz
Spec score 8.5 #5 of 26 in Game Save Editors

What it is

NMSE (No Man’s Save Editor) is a free, open-source desktop tool for editing No Man’s Sky saves. It can modify inventories, unlock items, adjust discoveries and create backups. A visual inventory grid supports drag-and-drop item management, auto-stacking and sorting; a backup picker lets users restore a copy. NMSE supports all 16 game languages and saves from Steam, GOG, Xbox Game Pass, PlayStation 4 and Nintendo Switch. It also supports cross-editor import and export of practically everything. The app runs on Windows, Linux and macOS: Windows users get a ZIP release, while Linux and macOS releases use Wine compatibility layers. The maker says NMSE will remain free and ad-free. It is a fan-made project 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.

Spec sheet

What it does
NMSE edits No Man’s Sky save files, including inventories, unlocks, discoveries and backups.Read 15 Oct 2026 · nmse.vectorcmdr.xyz
Purpose
NMSE is an open-source save editor for No Man’s Sky.Read 4 Oct 2026 · nmse.vectorcmdr.xyz
Integrations
The documented integrations are save formats and game platforms rather than third-party SaaS services; no external service integrations are listed.Read 15 Oct 2026 · github.com
Support
The maker directs users to Discord for community help and GitHub issues to report bugs.Read 4 Oct 2026 · 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.Read 15 Oct 2026 · github.com
API and SDK
The published documentation describes an internal .NET application architecture but does not document a public web API or SDK.Read 15 Oct 2026 · github.com
Backups
NMSE automatically creates the ten most recent timestamped ZIP backups for each save folder.Read 15 Oct 2026 · github.com
Bases and settlements
The editor handles base inventories, storage, settlement statistics, production, perks, corvette caches, fishing inventories and space-station data.Read 15 Oct 2026 · github.com
Build requirements
Building from source uses dotnet restore/build/test and requires the .NET 10.0 SDK with Windows or cross-compilation targeting enabled.Read 15 Oct 2026 · github.com
Community support
The project directs users to Discord, GitHub issues and Reddit for help and bug reporting.Read 15 Oct 2026 · nmse.vectorcmdr.xyz
Companions
Companion features include creature editing, custom creature building, pet-battle editing and pet-battle seed searches.Read 15 Oct 2026 · github.com
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.Read 15 Oct 2026 · nmse.vectorcmdr.xyz
Cost
The maker says the app will always be free and ad-free.Read 4 Oct 2026 · nmse.vectorcmdr.xyz
Developer documentation depth
Developer documentation covers architecture, core logic, data, I/O, models and UI internals.Read 15 Oct 2026 · github.com
Documentation
The project publishes a panel-by-panel user guide, developer documentation, contribution guidance, code-of-conduct material and support links.Read 15 Oct 2026 · github.com
Editing
It can modify inventories, unlock items, tweak discoveries, and make backups.Read 4 Oct 2026 · nmse.vectorcmdr.xyz
Installation
Windows installation consists of downloading a release archive, extracting it and running NMSE.exe; Steam, GOG and Xbox Game Pass save locations can be auto-detected.Read 15 Oct 2026 · github.com
Inventory tools
NMSE provides visual grids, drag-and-drop management, auto-stacking, sorting, imports and exports, backups, procedural-stat searches and a raw JSON viewer.Read 15 Oct 2026 · github.com
Languages
The application is localized in 16 languages, including English, French, German, Spanish, Portuguese, Chinese, Japanese and Korean.Read 15 Oct 2026 · github.com
Latest release
The releases page lists NMSE v1.4.29 as the latest release, dated 1 October 2026, with external-change detection added and several bug fixes.Read 15 Oct 2026 · github.com
Licence
The current repository README identifies the project licence as GNU Affero General Public License 3.0 and excludes reverse-engineered game-derived portions from wholesale reuse.Read 15 Oct 2026 · github.com
License and affiliation
The maker identifies NMSE as a fan-made project under GPL 3.0 and says it is not affiliated with Hello Games.Read 4 Oct 2026 · nmse.vectorcmdr.xyz
Limit: catalogue bug
A reported issue states that opening the catalogue could alter high-precision technology values without user edits and leave known technologies unsynchronized.Read 15 Oct 2026 · github.com
Limit: complex interface
A Linux discussion says NMSE does more than older editors but has a much more complex interface.Read 15 Oct 2026 · reddit.com
Limit: game-update churn
Reddit commenters note that major No Man’s Sky updates can make all save editors temporarily outdated.Read 15 Oct 2026 · reddit.com
Limit: JSON search
A Reddit user says the redesigned JSON presentation makes searching across branches difficult for their use case.Read 15 Oct 2026 · reddit.com
Linux and macOS support
Linux AppImage and macOS DMG packages run the Windows application through Wine; a native port is still under review.Read 15 Oct 2026 · github.com
Linux support
A Linux AppImage with Wine included is available; the app runs via Wine compatibility layers.Read 4 Oct 2026 · github.com
macOS support
A macOS DMG with a Wine launcher is available; the app runs via Wine compatibility layers.Read 4 Oct 2026 · github.com
Maker identity
The maintainer identifies himself as Josh, also known as vector_cmd or josh_axey, and describes himself as a professional developer and 3D artist.Read 15 Oct 2026 · github.com
Maker location
The maintainer’s GitHub profile lists Canberra, Australia.Read 15 Oct 2026 · github.com
Multiplayer editing limitation
The multiplayer panel is experimental, some values are enforced by the game and the feature requires a confirmation checkbox.Read 15 Oct 2026 · github.com
Player editing
Player tools cover health, currencies, game mode, difficulty, coordinates, words, glyphs, discoveries and milestones.Read 15 Oct 2026 · github.com
Praise: advanced features
A Reddit commenter specifically praises creature building, outfit import/export, ByteBeat, fishing, cooking, recipe trees and detailed corvette editing.Read 15 Oct 2026 · reddit.com
Praise: breadth
A Reddit discussion repeatedly describes Vector NMSE as the best or go-to current save editor and praises its unusually broad feature set.Read 15 Oct 2026 · reddit.com
Praise: update cadence
Reddit commenters praise NMSE for receiving timely updates and describe it as feature-forward compared with alternatives.Read 15 Oct 2026 · reddit.com
Privacy and security
The maker’s site and project description do not state a security certification or compliance standard.Read 4 Oct 2026 · nmse.vectorcmdr.xyz
Restore capability
Users can restore all files in a backup or restore only the currently loaded save through the Backup Picker.Read 15 Oct 2026 · github.com
Save platforms
It supports No Man’s Sky saves from Steam, GOG, Xbox Game Pass, PlayStation 4, and Nintendo Switch.Read 4 Oct 2026 · github.com
Security reporting
The security policy asks users to report vulnerabilities privately through the owner or Discord, aims to acknowledge reports within three business days and lists only the main branch as supported.Read 15 Oct 2026 · github.com
Ships and fleets
Starship, exocraft, freighter, frigate, squadron, corvette and multi-tool editing are included.Read 15 Oct 2026 · github.com
Supported game platforms
The repository says NMSE supports Steam, GOG, Xbox Game Pass, PlayStation 4 and Nintendo Switch saves.Read 15 Oct 2026 · github.com
Windows support
NMSE is a Windows application distributed as a ZIP release.Read 4 Oct 2026 · github.com

Plans and prices

Free Free ad-free · desktop save editing Read 15 Oct 2026 · nmse.vectorcmdr.xyz
NMSE Free Free and ad-free · desktop save editor Read 4 Oct 2026 · nmse.vectorcmdr.xyz

Every NMSE (No Man's Save Editor) plan and price →

Strong points and limits

Strong points

  • Edits saves from five listed platforms.
  • Supports all 16 game languages.
  • Includes inventory editing and backup restore.
  • Maker says it will remain free and ad-free.

Limits

  • Linux and macOS releases rely on Wine.
  • Community help is directed to Discord.
  • The fan-made project is not affiliated with Hello Games.

Who it suits

NMSE suits No Man’s Sky players who want to edit saves from the listed platforms, manage inventory items or restore backups. It is available for Windows, Linux and macOS, with Wine compatibility layers on the latter two.

Verdict

NMSE combines save editing, inventory tools and backup restoration for No Man’s Sky. Linux and macOS users should note the Wine requirement, and support channels are community Discord and GitHub issues.

Where Specifiction places it

Alternatives to NMSE (No Man's Save Editor)All alternatives →