Neko's Memory Warning
by neko37
Neko's Memory Warning shows a warning when the Java memory allocated to Minecraft falls outside a range set in its configuration, aimed at modpack developers.
What it does
The mod checks the memory available to the game and displays a warning when the amount is below a minimum or above a maximum that the modpack author defines. The minimum and maximum values, a recommended value, and the title and message text for each case are all set in the configuration file. Its options also limit how long titles and messages may be.
Warnings can appear as a system dialogue, which is useful when the game window is not in focus, or as a message sent to server operators when a player joins. Each warning can be turned off separately. The mod was tested on Linux and Windows 11, while the system pop-up is expected not to work on macOS.
Files are published for NeoForge only, for 1.21 and 1.21.1, with 1.0.3 for 1.21.1 as the latest file. The mod runs on the client or on the server, and neither side needs it. The source code and issue tracker are public, but the mod is not open source; it is released under All rights reserved.
Key features
Memory range warning
A message appears when the allocated Java memory is below the configured minimum or above the configured maximum.
Configurable thresholds
Minimum, maximum and recommended memory values can be set to match the requirements of a specific modpack.
Custom warning text
Separate titles and messages can be written for the minimum and maximum cases, with length limits on both.
System dialogue and operator messages
Warnings can be shown as a system dialogue or sent to server operators when they join, and each can be disabled.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Modpack developers who want to tell players when their Java memory allocation does not match the pack. Server owners who want operators informed on join can also use the operator message option.
How it compares
Leak Warning is a Client-side only NeoForge mod for 1.21.1, released under the GNU General Public License v3.0 or later and open source. Craft Attempt is a NeoForge mod for 1.21 – 1.21.1 that the environment places on both client and server, released under All rights reserved and not open source. Neko's Memory Warning is a NeoForge mod for 1.21 – 1.21.1 that runs on the client or server as an optional install, and it is not open source.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Neko's Memory Warning | NeoForge | 1.21 – 1.21.1 | Client or server, optional | 2026-05-22 |
| Leak Warning | NeoForge | 1.21.1 | Client-side only | 2026-08-04 |
| Craft Attempt | NeoForge | 1.21 – 1.21.1 | Client and server | 2026-08-05 |
Questions
Does Neko's Memory Warning require other mods?
Which game versions does Neko's Memory Warning support?
Does the warning work on macOS?
In the catalog
Neko's Memory Warning is one of 36,990 Utility mods on ModsFinder, and one of 13,477 Utility mods for NeoForge. 32,366 mods support Minecraft 1.21.1.
Similar mods
What the author says
A simple mod that sends a system dialogue or a chat message (or a minecraft screen warning WIP) when the allocated memory is above or below a configurable threshold. This is meant for modpack developers. The config is at config/nekosmemorywarming-common and is also accessible via in-game client menu. Tested on Linux…
Official listing
- Modrinth page
- modrinth.com/mod/nekos-memory-warning
- Owner
- neko37
- Published
- 2026-05-21
- Updated on Modrinth
- 2026-05-22
- Facts verified
- 2026-10-15