NSLM — Non-Steam Game Library Manager

 Keep your non-Steam library organized

NSLM is a free Windows desktop utility that finds games outside Steam, helps you add selected entries as non-Steam shortcuts, and keeps their library artwork tidy.

What it does

• Scans Windows game folders without touching game files or saves.
• Detects installed native Steam games to avoid duplicate non-Steam shortcuts.
• Creates verified backups before updating Steam shortcuts and artwork.
• Uses official Steam artwork first, with optional SteamGridDB community fallbacks.
• Lets you choose a Steam collection or leave games Uncategorized.

Download

Download NSLM-Windows-x64.zip, extract the whole archive, and run NSLM.exe. Keep the _internal folder next to the executable.

Source code, checksums, and releases: github.com/dgorbatko/NSLM

Support

NSLM is free and open source. If it saves you time, you can support development on Ko-fi. Donations are voluntary and do not provide a commercial support contract.

NSLM is an independent third-party utility and is not affiliated with or endorsed by Valve, Steam, SteamDB, or SteamGridDB.