Memory Leak Fix
ModA mod that fixes random memory leaks for both the client and server.
Why no grade
How grades workFinished or replaced projects get no grade: they will not get fixes or new versions.
- The project page: Making this mod obsolete in future versions of the game.
All 11 criteria
Maintenance
Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.2.8 years ago (6 Jan 2024). 689 modpacks released in the last 6 months still include it, so it keeps 80% of these points.Supports popular versionsWhether the project has a file for a Minecraft version that 15% or more of the popular mods updated in the last 6 months also support. A version many modpacks use, like 1.20.1 or 1.21.1, also counts after a release in the last 12 months.1.20.4 on Forge, Fabric and Quilt. 15% or more of the popular mods updated in the last 6 months also have files for 1.20.1. Latest Minecraft: 26.3.Regular releasesIn how many of the last 24 months a new file came out. Full points at 8 months.No release in the last 24 monthsStability
Removed from modpacksHow many modpacks removed it in a later version of the pack. We can only see this in modpacks with two or more versions. A pack that swaps it for another edition of the same project, or that is rebuilt from scratch, does not count.102 of the 345 modpacks with two or more versions removed it in a later one (30%)Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.Not measured yet.Known conflictsHow many projects say they do not work with it, compared with how widely it is used. Packs, small projects, forks, ports, add-ons, alternatives and old versions do not count.1 known conflict, but it does not count in the grade See the known conflictTransparency
Source codeWhether the project page links to its source code, so anyone can read what it does.GitHub · fxmorin/memoryLeakFixPlace to report problemsWhether the project page links to a place where players can report problems: an issue tracker.GitHub issues · fxmorin/memoryLeakFixPopularity
DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.59,751,525Track record
AgeHow long the project has existed. It counts less when no new file came out recently.4.4 years, 55 releasesSecurity
PassedFile checksThis check adds no points. It can only take points away.Our checks found nothing harmful in both latest files for recent Minecraft versions. See Security
About
Memory Leak Fix is a client- and server-side mod that addresses Minecraft memory leaks, with documented fixes for issues such as biome-temperature caching, entity brain memories, custom tag keys, and drowned navigation data. On the client, it also targets leaks that can keep a world loaded after returning to the main menu, as well as memory left behind when texture or screenshot image processing fails. Many of the leaks it previously fixed have since been fixed in Minecraft itself, so the mod is primarily relevant to older game versions.
Written from Modrinth . How we write it
In-game changes
Changes the game's code in 7 areas: Mobs and their behaviorChanges 4 game code files in this area: mobs, animals, villagers, projectiles and how they move and act., Rendering and graphicsChanges 3 game code files in this area: drawing mobs, items, particles and textures on screen., World generationChanges 1 game code file in this area: terrain, biomes and structures made when new land is created., Game data and resourcesChanges 1 game code file in this area: recipes, tags, advancements, language files and other game data., Game coreChanges 1 game code file in this area: the main loop, lighting and other code the whole game uses., Server and world logicChanges 1 game code file in this area: the world, commands, scoreboards, saved data and game rules. and Other game codeChanges 1 game code file in this area: game code that is not in one of the areas above..
Adds no new blocks, items or other content.
Keeps all of vanilla Minecraft's textures, models and sounds.
Often used with it
See all 30Details
- Creator
- FX
- License
- GNU Lesser General Public License v2.1 only
- Downloads
- 59.9M
- Created
- 25 May 2022
- Official pages
- Modrinth , CurseForge
- Links
- Source code , Issues , Discord
Security
No harmful code found
We checked its files and read their code, without running it.
Why we show this: a mod runs on your computer like any program, so harmful code in it can take your accounts or files. Our checks look for known signs of harm. They cannot prove that a file is harmless. In the grade: malware means no grade, and a Warning in a latest file for a recent Minecraft version lowers it.
How we checked
- FilesWe download the files from Modrinth or CurseForge and look at what is inside them and what their code can do, without running them. Fixed rules tell what is harmful.8 latest files: the newest file for each Minecraft version and loader. The answer above is about the 2 for recent versions. Recent versions: those released in the last 2 years, plus 1.20.1 and 1.21.1, among the most played in modpacks. See each file in Releases
- Their codeWe turn the code of the files back into readable code and follow what it does, without running it. This shows what it downloads, what it sends and where your login goes.Read without running it
- Author on ModrinthThe disclosure form on Modrinth, where the author declares that the project reads or edits things on your system outside the game. Since 13 Aug 2026, Modrinth's rules require it when this applies.Nothing declared about your system outside the game.
- Looked for, not foundWe looked for these in the file and did not find them.The internet, folders outside the game, other programs, updating itself, the webcam or microphone, an AI service.
Privacy
We found nothing it sends
We read its code without running it: it contacts no web address while you play.
Why we show this: a mod can send things about you over the internet, like your player name or your login. Contacting an address to check for updates or download files sends nothing about you. Not in the grade: sending data can be normal for what a mod does.
How we checked
- Files readWe read the code without running it. We list each web address the code contacts while you play, and what it sends. Code that is never used is left out.The code of both files, for recent Minecraft versions. See each file in Releases
- Author on ModrinthThe disclosure form on Modrinth, where the author declares crash reports, usage data and advertisements. Since 13 Aug 2026, Modrinth's rules require it when a project collects data on its users or shows advertisements.Nothing declared about crash reports, usage data or advertisements.
AI
No sign that AI was used to make it
We looked for AI tools in its texts, files, images and code history and found none.
No sign of AI in the game
We found no AI service, AI library or AI model file in its code.
Why we show this: some players and servers avoid projects made with AI, and AI in the game can send what you write to an online service. Not in the grade: using AI does not tell whether a project works well or is kept up to date.
How we checked
- Author on ModrinthThe disclosure form on Modrinth. Since 13 Aug 2026, Modrinth's rules require it when a substantial part of the code is AI output, when an asset is mainly AI output, or when the project or its page relies on generative AI.No AI content or AI features declared.
- Code historyThe public code on GitHub: who made each change, credit lines such as "Co-authored-by", and its files.Nothing found
- Description and changelogsThe description, project page and newest changelogs: sentences saying an AI tool was used, and text pasted from an AI chat.Nothing found20 of 40 changelogs read
- Its filesFiles that AI coding tools leave behind (like AGENTS.md), and the texts inside the files you download.Nothing found
- Images in its filesHidden data in the images of the files you download, where AI image tools write their name and settings.Nothing found1 image read
- Code of the modThe code and files of the mod, read without running it: addresses of AI services, AI libraries, AI model files and a place for your own AI key.No AI service, AI library or AI model file28 code files read
Compatibility
See all 55 filesPoint at or tap a version to see its loaders.
Known conflicts
These projects do not work together with Memory Leak Fix: their authors or Memory Leak Fix's author say so. If you install both, the game can crash or some features can stop working. Some of them do the same job as Memory Leak Fix, so you only need one.
Related projects
Projects that need Memory Leak Fix to work.
Modpacks using this project
Find modpacks with it| Oct 2024 | 422 |
|---|---|
| Nov 2024 | 362 |
| Dec 2024 | 394 |
| Jan 2025 | 391 |
| Feb 2025 | 327 |
| Mar 2025 | 389 |
| Apr 2025 | 338 |
| May 2025 | 329 |
| Jun 2025 | 310 |
| Jul 2025 | 279 |
| Aug 2025 | 269 |
| Sep 2025 | 266 |
| Oct 2025 | 276 |
| Nov 2025 | 268 |
| Dec 2025 | 252 |
| Jan 2026 | 244 |
| Feb 2026 | 224 |
| Mar 2026 | 243 |
| Apr 2026 | 196 |
| May 2026 | 173 |
| Jun 2026 | 200 |
| Jul 2026 | 198 |
| Aug 2026 | 143 |
| Sep 2026 | 126 |
Fewer modpacks put it in their new versions than a year ago: 173 a month now, 299 a year agoThe average of the last 6 months, compared with the same 6 months a year before. We say it only when the change is large..
8,371 modpacks include Memory Leak Fix in at least one of their versions. Here are the 30 most downloaded.
Fabulously Optimized27.4M downloadslast version with it 15 Oct 2023
Better MC [FORGE] - BMC421.1M downloadslast version with it 19 Jan 2025
Prominence™ II: Hasturian Era15.4M downloadslast version with it 5 Jun 2025
Cobblemon Official Modpack [Fabric]15.3M downloadslast version with it 27 May 2024
Zombie Invade 100 Days15.3M downloadslast version with it 27 Jul 2025
Better MC [FABRIC] BMC17.9M downloadslast version with it 16 Jul 2023
All the Mods 6 - ATM66.5M downloadslast version with it 24 Jan 2024
Better MC [FABRIC] - BMC25.9M downloadslast version with it 19 Jan 2025
Cisco's Fantasy Medieval RPG [Ultimate]5.1M downloadslast version with it 1 Jun 2026
Immersed With Shaders4.5M downloadslast version with it 29 Jun 2024Often in the same modpacks
Mods that modpacks often add together with Memory Leak Fix. Share: how many of the modpacks with Memory Leak Fix also have that mod.
FerriteCoreAModin 71% of the modpacks with Memory Leak Fix
LithiumAModin 57% of the modpacks with Memory Leak Fix
Mod MenuAModin 56% of the modpacks with Memory Leak Fix
Dynamic FPSAModin 56% of the modpacks with Memory Leak Fix
Sodium ExtraAModin 47% of the modpacks with Memory Leak Fix
Reese's Sodium OptionsAModin 46% of the modpacks with Memory Leak Fix
LambDynamicLights - Dynamic LightsAModin 42% of the modpacks with Memory Leak Fix
LazyDFU-Modin 41% of the modpacks with Memory Leak Fix
BetterF3AModin 41% of the modpacks with Memory Leak Fix
Chat HeadsAModin 39% of the modpacks with Memory Leak FixLatest files
The newest file for each Minecraft version and loader. The files for recent versions come first. Recent versions: those released in the last 2 years, plus 1.20.1 and 1.21.1, among the most played in modpacks.