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SynaxisMinecraft mod for 1.21.1

Add circuit / luascript infrastructure that runs at full precision/frequency and many utilities to sable

newest supported release 1.21.1Mc Addons
Latest version
synaxis-1.5.0.jar
Minecraft
1.21.1
Java
Java 21+
Loader
NeoForge
Licence
not stated
Downloads
96.2k
Updated
3 mo ago
Available on
CurseForge

Minecraft versions

Every version Synaxis declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1NeoForge21+declared8 Aug 2024

Download

From Synaxis’s own host. Nothing is re-hosted here.

Most recently published release

synaxis-1.5.0.jarrelease9 Aug 2026

synaxis-1.5.0.jar · 4.2 MB · for 1.21.1 · NeoForge

Download this release
3b3dfa037f47…
Older versions11
  • synaxis-1.4.3.jar11 Jul 20261.21.14.2 MB202 downloadsf764b1bef584…Get
  • synaxis-1.4.2.jar22 Jun 20261.21.14.1 MB4.8k downloadsbd5aa87437d4…Get
  • synaxis-1.4.0.jar14 Jun 20261.21.14.1 MB651 downloads689f1105f627…Get
  • synaxis-1.3.4.jar8 Jun 20261.21.14.1 MBa95931a61faa…Get
  • synaxis-1.2.1.jar25 May 20261.21.13.2 MB230 downloadsbe7b1fce1df8…Get
  • synaxis-1.2.0.jar17 May 20261.21.13.1 MB162 downloadse33bae1aba53…Get
  • synaxis-1.1.7.jar12 May 20261.21.13.0 MB185 downloads3009574ed5d2…Get
  • synaxis-1.1.6.jar9 May 20261.21.13.0 MB237 downloads5c451bc12d3b…Get
  • synaxis-1.1.5.jar6 May 20261.21.12.9 MB153 downloads6d25497a08ca…Get
  • synaxis-1.0.4.jar28 Apr 20261.21.12.5 MBdf370577e5ba…Get
  • synaxis-1.0.2.jar27 Apr 20261.21.12.2 MB1 downloade2050ed04d4d…Get

Frequently asked

Does Synaxis work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Synaxis declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Which platform or loader does Synaxis support?

NeoForge. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for Synaxis?

Among the supported Minecraft releases above, the highest recorded requirement is Java 21 or newer. Use the requirement for the exact Minecraft version you run; previews and snapshots may differ.

How do I install Synaxis?

Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.

Where do I download Synaxis safely?

Start with the author's page on CurseForge, which is where the data here is synced from. MCReference does not host or repackage files. When available, recorded download links go to the source for that release; verify the publisher, filename and any available checksum before running it.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

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Details from CurseForge, where the author last updated it on 9 Aug 2026. We do not host files or republish descriptions. Available download links point to the author’s own release.

Is this information wrong or missing something? .