CurseForge · Minecraft mod
OpenComputers: Rebooted
OpenComputers: Rebooted is a port of OpenComputers to 1.21.1, with several new features, including integrated OpenScreens support.
Quick answer
Which OpenComputers: Rebooted release should I use?
OpenComputers: Rebooted OpenComputers v1.9.4-2 targets 1.21.1 with NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. All 1 required mods have matching files.
Where it goes
Is OpenComputers: Rebooted required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does OpenComputers: Rebooted OpenComputers v1.9.4-2 need?
OpenComputers v1.9.4-2. Change the file and its required mods may change too.
Install Scalable Cat's Force first. We found matching files for this game-version and loader setup.
We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add OpenComputers: Rebooted without breaking your instance.
Built for OpenComputers: Rebooted OpenComputers v1.9.4-2. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use OpenComputers v1.9.4-2. It targets 1.21.1 with NeoForge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install Scalable Cat's Force first. We found matching files for this game-version and loader setup.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside OpenComputers v1.9.4-2. It opens that exact file at the source.
About this project
What does OpenComputers: Rebooted add?
OpenComputers for Minecraft 1.21.1
OpenComputers: Rebooted brings persistent, modular, programmable computers to Minecraft—along with robots, drones, servers, microcontrollers, tablets, networking, and much more.
Build computers from individual components such as CPUs, memory, graphics cards, hard drives, and network cards. Install OpenOS, connect a screen and keyboard, then program your creations in Lua. Systems can be as simple as an automated redstone controller or as elaborate as a network of servers, robots, sensors, and machinery.
Whether you want to automate a base, write your own software, construct autonomous robots, or simply make a computer beep at you because you forgot the RAM, OpenComputers: Rebooted gives you the tools to build it.
Features
- Modular computers assembled from tiered components
- A complete Lua-programmable operating environment with OpenOS
- Screens, keyboards, filesystems, networking, and wireless communication
- Programmable robots and drones that can interact with the world
- Servers, racks, microcontrollers, and portable tablets
- Redstone control, motion sensors, geolyzers, adapters, and transposers
- Hologram projectors and programmable 3D printers
- Persistent computers that retain their state when chunks unload
- An extensive in-game manual covering hardware, software, and programming
- A Java API for integration with other mods
- OpenScreens integrated directly into the base mod (with permission)
- OpenPrinter integrated directly into the base mod
About This Port
This project is a community-maintained NeoForge port of the original OpenComputers mod for Minecraft 1.21.1.
The port remains under active development. Core gameplay is available, but some integrations and compatibility work are still incomplete. Back up important worlds before testing development releases.
Original project: https://github.com/MightyPirates/OpenComputers
Requirements
- Minecraft 1.21.1
- NeoForge 21.1 or newer
- Java 21
- ScalableCatsForce for NeoForge 3.3.3
Both OpenComputers: Rebooted and ScalableCatsForce must be installed in your mods folder.
Documentation and Support
The in-game manual is the best place to begin. The original OpenComputers wiki also remains useful for general gameplay and Lua API concepts, although some installation and integration information describes older Minecraft versions.
- Source code: https://github.com/CaitlynMainer/OpenComputers
- Issues: https://github.com/CaitlynMainer/OpenComputers/issues
- Original wiki: https://ocdoc.cil.li/
- Original project: https://github.com/MightyPirates/OpenComputers
Modpacks
OpenComputers: Rebooted may be included in modpacks. Please respect the license and attribution notices included with the mod.
Credits
OpenComputers was originally created by Florian “Sangar” Nücke and developed with contributions from Vexatos, payonel, magik6k, Lord Joda, and many other contributors.
This modern port is maintained by MichiyoRavencroft.
Project description from CurseForge.
Pick your setup
OpenComputers: Rebooted by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.1
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
OpenComputers: Rebooted versions and loaders
OpenComputers v1.9.4-2
opencomputers-1.9.4-2.jar
10 Aug 2026
OpenComputers v1.9.4
opencomputers-1.9.4.jar
9 Aug 2026
OpenComputers v1.9.3-5
opencomputers-1.9.3-5.jar
6 Aug 2026
OpenComputers v1.9.3-4
opencomputers-1.9.3-4.jar
5 Aug 2026
OpenComputers v1.9.3-3
opencomputers-1.9.3-3.jar
4 Aug 2026
OpenComputers v1.9.3-2
opencomputers-1.9.3-2.jar
3 Aug 2026
OpenComputers v1.9.3
opencomputers-1.9.3.jar
3 Aug 2026
OpenComputers v1.9.0
opencomputers-v1.9.0.jar
1 Aug 2026
Looking for an older file? The official CurseForge project page is in Resources.