
mod
Online DetectorMinecraft mod for 1.20.4
Online Detector adds a few new Blocks found in the redstone category, that will allow you to keep track of who is online on a server.
- Latest version
- 1.20-6.0.0
- Minecraft
- 1.16.3 to 1.20.4
- Java
- Java 17+
- Loaders
- Quilt, Forge, Fabric
- Licence
- LGPL-3.0-only
- Downloads
- 43.8k
- Updated
- 2 y ago
- Available on
- Modrinth
Host Online Detector servers
One click and Online Detector is installed with the right loader, on hardware built for it.
- 1.20.4
- Quilt
- Forge
- Fabric
- One click mod install
- Loader matched for you
- Ryzen CPUs
- NVMe SSD
Screenshots
Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.
Minecraft versions
Every version Online Detector declares support for, newest first, with the Java runtime that version needs.
| Minecraft | Through | Java | Evidence | Released |
|---|---|---|---|---|
| 1.20.4 | Quilt, Forge, Fabric | 17+ | declared | 7 Dec 2023 |
| 1.20.3 | Fabric, Quilt, Forge | 17+ | declared | 4 Dec 2023 |
| 1.20.2 | Forge, Quilt, Fabric | 17+ | declared | 20 Sept 2023 |
| 1.20.1 | Forge, Quilt, Fabric | 17+ | declared | 12 Jun 2023 |
| 1.20 | Forge, Quilt, Fabric | 17+ | declared | 2 Jun 2023 |
| 1.19.4 | Forge, Quilt, Fabric | 17+ | declared | 14 Mar 2023 |
| 1.19.3 | Fabric, Forge, Quilt | 17+ | declared | 7 Dec 2022 |
| 1.19.2 | Quilt, Forge, Fabric | 17+ | declared | 5 Aug 2022 |
| 1.19.1 | Fabric, Quilt, Forge | 17+ | declared | 27 Jul 2022 |
| 1.19 | Forge, Quilt, Fabric | 17+ | declared | 7 Jun 2022 |
| 1.18.2 | Quilt, Forge, Fabric | 17+ | declared | 28 Feb 2022 |
| 1.16.5 | Quilt, Forge, Fabric | 8+ | declared | 14 Jan 2021 |
| 1.16.4 | Fabric, Quilt, Forge | 8+ | declared | 29 Oct 2020 |
| 1.16.3 | Forge, Fabric, Quilt | 8+ | declared | 10 Sept 2020 |
Download
From Online Detector’s own host. Nothing is re-hosted here.
online_detector-forge-1.20-6.0.0.jar · 0.2 MB · for 1.20.1, 1.20
70009b4f2e28…Older versions7Hide older versions
- 1.20.4-8.0.03 Oct 20241.20.4, 1.20.30.2 MB85 downloads
463eb9e40c68…Get - 1.20.2-7.0.03 Oct 20241.20.20.2 MB65 downloads
a413802f002c…Get - 1.19.4-5.0.03 Oct 20241.19.40.2 MB63 downloads
6e7e8861c0ac…Get - 1.19.3-4.0.03 Oct 20241.19.30.2 MB90 downloads
a3fe8147bf51…Get - 1.19-3.1.23 Oct 20241.19.2, 1.19.1, 1.190.2 MB111 downloads
b782370ea7e1…Get - 1.18.2-2.1.126 Sept 20241.18.20.2 MB76 downloads
53bfbd58b7ac…Get - 1.16-1.3.022 Sept 20241.16.5, 1.16.4, 1.16.30.2 MB92 downloads
e16d3bee1fa7…Get
Frequently asked
Does Online Detector work on Minecraft 1.20.4?
Yes. 1.20.4 is the newest Minecraft version Online Detector 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 Minecraft versions does Online Detector support?
Everything the author has declared, from 1.16.3 up to 1.20.4. The full list is in the table above, with the Java runtime each version needs next to it.
Do I need to install Online Detector on the client or the server?
Both. Every player needs it installed and so does the server, so anyone joining without it will be refused.
Which platform or loader does Online Detector support?
Quilt, Forge, Fabric. 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 Online Detector?
On the newest Minecraft version it supports, Java 17 or newer. The requirement comes from the Minecraft version you run rather than from the mod itself, so on an older supported Minecraft the answer is that version's Java, not this one.
What licence is Online Detector under?
LGPL-3.0-only, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.
How do I install Online Detector?
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 Online Detector safely?
Start with the author's page on Modrinth, which is where the data here is synced from. MCReference does not host or repackage files. The download link goes to the source recorded for that release; verify the publisher, filename and checksum before running it.
Works on the same versions
Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.
Is this information wrong or missing something? .

