Seed Atlas

Free plan LinuxMacWindows

What Seed Atlas is

Seed Atlas is a Minecraft map viewer and seed-finding tool for exploring generated worlds and searching large areas. Select a Minecraft version, enter a seed, then inspect the map or search a chosen area. It covers biomes and structures in the Overworld, Nether, and End, and can find slime chunks. For broader searches, Seed Atlas can use all available CPU threads. You can combine search conditions, apply Lua filters, and save searches as session files to resume later.

The README says Seed Atlas supports Minecraft releases through 26.3. It is free and available for Linux, macOS, and Windows under the GNU GPLv3 license. The project is based on cubiomes-viewer by Cubitect and says it is not an official Minecraft product or associated with Mojang or Microsoft. Release notes say the app works on M-Series Macs and should work on Intel Macs, though the maker says Intel compatibility has not been tested. The Windows installer is unsigned, so Windows Defender may display a warning that it is unknown. Further support is directed through the maker's Discord.

Who it suits

Seed Atlas suits Minecraft players who want to inspect seeds and search for particular biomes, structures, or slime chunks. Its filters and resumable sessions also suit users running detailed or large-area searches.

What it does well

Explore the Overworld, Nether, and End.
Search for biomes, structures, and slime chunks.
Searches can use all available CPU threads.
Combine conditions and apply Lua filters.
Save and resume searches with session files.

What to know first

The Windows installer is unsigned and may trigger a Defender warning.
Intel Mac compatibility is described as expected but untested.
It is not an official Minecraft product or affiliated with Mojang or Microsoft.

Getting started

Open the project's GitHub page.
Choose a Linux, macOS, or Windows version.
Select a Minecraft version.
Enter a seed.
Explore the map or search a selected area; save a session file to resume a search later.

Verdict

Pick Seed Atlas if you want a free desktop tool for exploring Minecraft seeds and running filtered searches across dimensions. Consider another route if you require an officially affiliated Minecraft product or prefer a signed Windows installer.

Questions

Is Seed Atlas free?

Yes. Seed Atlas is free and licensed under GNU GPLv3.

Which platforms does it support?

It is available for Linux, macOS, and Windows.

Which Minecraft versions does it support?

The README says it supports Minecraft releases through 26.3.

What can I search for?

You can search for biomes, structures, and slime chunks in the Overworld, Nether, and End. Searches can combine conditions and use Lua filters.

Is Seed Atlas an official Minecraft product?

No. The project says it is not official and is not associated with Mojang or Microsoft.

Are there installation notices for Windows or macOS?

The Windows installer is unsigned and may trigger a Windows Defender warning. The maker says it works on M-Series Macs and should work on Intel Macs, but Intel compatibility has not been tested.

Facts from Seed Atlas's own pages

Advanced search: Seed searches can combine conditions and use Lua filters. · github.com, 9 Oct 2026
Advanced searches: Users can combine search conditions and apply Lua filters. · github.com, 9 Oct 2026
Compatibility notice: The project says Seed Atlas is not an official Minecraft product and is not associated with Mojang or Microsoft. · github.com, 9 Oct 2026
Dimensions: It can explore biomes and structures in the Overworld, Nether, and End. · github.com, 9 Oct 2026
How to use: Users select a Minecraft version, enter a seed, then explore the map or search a selected area. · github.com, 9 Oct 2026
License: Seed Atlas is licensed under GNU GPLv3. · github.com, 9 Oct 2026
macOS compatibility: The release notes say Seed Atlas works on M-Series Macs and should work on Intel Macs, which the author says they have not tested. · github.com, 9 Oct 2026
macOS support: The release notes say Seed Atlas works on M-series Macs and should work on Intel Macs, which the maker had not tested. · github.com, 9 Oct 2026
Minecraft affiliation: The README says Seed Atlas is not an official Minecraft product and is not associated with Mojang or Microsoft. · github.com, 9 Oct 2026
Minecraft versions: The README says Seed Atlas supports Minecraft releases through 26.3. · github.com, 9 Oct 2026
Origin: Seed Atlas is based on cubiomes-viewer by Cubitect. · github.com, 9 Oct 2026
Performance: Searches can use all available CPU threads. · github.com, 9 Oct 2026
Product: Seed Atlas is a fast map viewer and seed-finding tool for Minecraft. · github.com, 9 Oct 2026
Saved searches: Searches can be saved and resumed with session files. · github.com, 9 Oct 2026
Saved sessions: Searches can be saved and resumed with session files. · github.com, 9 Oct 2026
Search: It searches large areas for biomes, structures, and slime chunks. · github.com, 9 Oct 2026
Search speed: Searches can use all available CPU threads. · github.com, 9 Oct 2026
Support: The release notes direct users to the maker's Discord for further support. · github.com, 9 Oct 2026
Windows installation: The release notes say the Windows installer is not officially signed, so Windows Defender may show a warning because it is unknown. · github.com, 9 Oct 2026
Windows notice: The release notes say the Windows installer is unsigned and may trigger a Windows Defender warning because it is unknown. · github.com, 9 Oct 2026
Worlds: It lets users explore biomes and structures in the Overworld, Nether, and End. · github.com, 9 Oct 2026

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