KotKit is a simple library plugin that adds a non-relocated version of the Kotlin stdlib to your server.
What's Kotlin?
Kotlin is a programming language compatible with Java that is gaining more and more traction among developers. The Kotlin stdlib, standard library, contains many additional features built on top of Java, allowing developers to write less to do more!
Why do I need KotKit?
If a plugin is asking you to install KotKit, it's because they have decided to write their plugin in Kotlin and don't want to waste your server's space by providing their own copy of Kotlin's standard library.
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.17, 1.17.1, 1.18
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as KotKit-1.0.2-all.jar — drop this file into the mods folder
- Download size: 3.7 MB
- Download link checked 9 Sept 2026 — working
These come from our own check of the pack file, not from the source page.