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Developer Toolkit

Modpack

A developer toolkit modpack with a collection of useful utilities and game optimizations. Works out of the box - Developer's Toolkit by @JosTheDude

Type

Modpack

Modrinth Downloads

2,007

Modrinth ID

oUEnwz5P

Last Updated

Sep 2, 2026

Description

Developer's Toolkit

A developer focused modpack with a collection of useful utilities and game optimizations.

This modpack is primarily built for developers, admins, and configurators in mind. It contains a large variety of server utilities that are combined to become a cause of the following reactions:

  • "Oh, was that not just vanilla? My modpack does that for me!"
  • "This is so annoyi- oh wait my modpack has a tool for that!"
  • "I literally cannot live without this"
  • Among other experiences, depending on use-case and usage.

Built to work out of the box with most settings pre-configured. Feel free to modify as needed. See the mod list for full list of functionality, alongside feature list below.

This modpack is based off of Simply Optimized to maximize performance. It has a lightweight performance footprint. Developer's Toolkit is maintained by JosTheDude

List of Features

  • Connect to Servers Regardless of Version (1.7 to latest, bedrock, and more!) No more switching versions!
  • Easy to access to Minecraft-compatible fonts and symbols (Small Caps, Unicode symbols, etc.) No more hunting for working symbols!
  • Item, Entity, etc. NBT & Component Viewers (Component Viewers, NBT Viewers, etc.)
  • NBT Autocomplete for Commands
  • Improved Inventory Searching (Persistent Inventory Searching, Enable Operator Tab, Better Saved Hotbars to store items, and more!)
  • Improved Command Selections (UUID entity filtering, easy near checks)
  • Teleport Utilities (through commands, top commands, centering, all client-side)
  • Extremely customizable chat, with tabs, filters, highlights, mentions, and more
  • Copy chat messages raw and as screenshots easily
  • Shulker, Chest, and Block Peek within Inventories
  • Resource & Shader Pack Store In-Game (via Resourcify)
  • Freelook & Freecam (OP / Creative Only)
  • Scrollable Tooltips
  • Command Block IDE (for easy command block editing)
  • Dynamic App Icon (easily view which open client is connected to what!)
  • Lang Keys Resource Pack for Easy MiniMessage Translations
  • See through water and lava
  • Toggleable Fullbright
  • Extremely Increased Chat History
  • Disconnect Confirmations
  • Pre-installed Voice Chat
  • Basic Info Display
  • One-click server joining from the main menu
  • Rebind everything, from narrator to the F3 menu
  • Searchable Controls Menu
  • Bundled Worldedit
  • And so much more... view the mod menu in-game for a full list

All with 63 mods in a highly performanced-optimized modpack. Built to work out of the box!

Contribution & Mod Suggestions

Thank you for considering suggesting mods or contributing! Take a look at the Contribution Guidelines for additional information.

Performance Recommendations

Developer's Toolkit is built with performance in mind, however, it does contain a significant amount of utility mods. The modpack is based off of Simply Optimized for maximum performance but you may need additional resources depending on computer specs. We recommend the following allocations to your client:

  • Recommended Allocation

Aikar's Flags Arguments

-XX:+UseG1GC -XX:+ParallelRefProcEnabled -XX:MaxGCPauseMillis=200 -XX:+UnlockExperimentalVMOptions -XX:+DisableExplicitGC -XX:+AlwaysPreTouch -XX:G1NewSizePercent=30 -XX:G1MaxNewSizePercent=40 -XX:G1HeapRegionSize=8M -XX:G1ReservePercent=20 -XX:G1HeapWastePercent=5 -XX:G1MixedGCCountTarget=4 -XX:InitiatingHeapOccupancyPercent=15 -XX:G1MixedGCLiveThresholdPercent=90 -XX:G1RSetUpdatingPauseTimePercent=5 -XX:SurvivorRatio=32 -XX:+PerfDisableSharedMem -XX:MaxTenuringThreshold=1 -Dusing.aikars.flags=https://mcflags.emc.gs -Daikars.new.flags=true

Disclaimers

  • This modpack may result in punishment on certain networks if not configured properly. It contains the following high-risk mods:
  • Tweakaroo, extremely punishable & considered a cheat with certain settings
  • ViaFabricPlus, can cause packet issues on some networks
  • Freecam, considered a cheat, client-side only
  • Freelook, considered a cheat, client-side only
  • Only the latest version of this modpack is supported. If a modpack version for 1.12.2 is out, previous versions for 1.8, 1.10, and 1.11 are all unsupported.
  • Community Involvement within this Pack's Communities is bound by the project's Code of Conduct

ALT: Description of Developer's Toolkit Modpack by @JosTheDude

Compatibility

Mod Loaders

Fabric

Game Versions

1.21.1 1.21.4 1.21.5 1.21.8 1.21.10 1.21.11 26.2

Recommended Gear

Affiliate

Hardware and extras that pair well with this modpack.

As an Amazon Associate I earn from qualifying purchases.

Screenshots

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Makes text more pleasant to select by improving the "move by word" feature (Ctrl+← and Ctrl+→).

Mod 7,146,423
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Camera Enhancements

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Mod 58,277
Clear Water/Lava/PowderSnow

Clear Water/Lava/PowderSnow

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clientcommands

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Cloth Config API (Fabric/Forge/NeoForge)

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Collective

Collective

🎓 Collective is a shared library with common code for all of Serilum's mods.

Mod 338,277,106
Component Viewer

Component Viewer

Component Viewer is a mod for Minecraft Java Edition that allows you to view and copy components of any item stack.

Mod 58,758
Concurrent Chunk Management Engine (Fabric)

Concurrent Chunk Management Engine (Fabric)

A Fabric mod designed to improve the chunk performance of Minecraft.

Mod 40,526,957
Confirm Disconnect

Confirm Disconnect

Adds a confirmation dialogue before exiting your world/server

Mod 365,619
Controlling

Controlling

Adds a search bar to the Key-Bindings menu

Mod 439,261,026
CookieJar

CookieJar

Developer tool to view and edit cookies

Mod 3,474
Custom Client Brand

Custom Client Brand

Changes the minecraft:brand to any customizable string.

Mod 88,954
Dynamic App Icon

Dynamic App Icon

Simple mod that changes the application icon of Minecraft to that of a world or server when joining

Mod 29,390
Entity Culling Fabric/Forge

Entity Culling Fabric/Forge

Using async path-tracing to hide BlockEntities/Entities that are not visible

Mod 417,883,852
Fabric API

Fabric API

Core API library for the Fabric toolchain

Mod 517,106,856
Fabric Language Kotlin

Fabric Language Kotlin

Fabric language module for Kotlin

Mod 214,584,463
Fast IP Ping

Fast IP Ping

Yeet the laggy reversed DNS lookup for literal IP server addresses

Mod 78,967,399
FerriteCore

FerriteCore

Memory usage optimizations

Mod 162,029,759
Freecam

Freecam

A highly customizable freecam mod.

Mod 22,501,193
ImmediatelyFast

ImmediatelyFast

Speed up immediate mode rendering in Minecraft

Mod 323,896,751
Iris Shaders

Iris Shaders

A modern shader pack loader for Minecraft intended to be compatible with existing OptiFine shader packs

Mod 191,158,530
Lithium (Fabric/NeoForge)

Lithium (Fabric/NeoForge)

An optimization mod for Minecraft which improves server performance significantly.

Mod 237,507,811
MaLiLib

MaLiLib

A library mod required for masa's client-side mods

Mod 58,007,326
Mod Menu

Mod Menu

Adds a mod menu to view the list of mods you have installed.

Mod 239,509,507
ModernFix-mVUS

ModernFix-mVUS

A fork of ModernFix that adds minor version update support.

Mod 12,770,548
Mods Command

Mods Command

A Fabric mod adding commands to list, search, and get information about installed mods.

Mod 64,970
MoreCulling

MoreCulling

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Mod 99,386,109
My Resource Pack, My Choice

My Resource Pack, My Choice

Stop servers from overriding your resource packs! Allows you to skip, block and disable certain server resources and to...

Mod 171,146
NBT Autocomplete

NBT Autocomplete

Adds suggestions for NBT tags in commands

Mod 8,303,699
No Command Confirm

No Command Confirm

A light client side mod to allow greater control over the behavior of the "Confirm Command Execution" dialog window. For...

Mod 78,971
Ok Zoomer - It's Zoom!

Ok Zoomer - It's Zoom!

A Fabric/NeoForge/Forge zoom mod that is powerful, lean, and pretty customizable. The zoom is yours!

Mod 14,730,875
Peek

Peek

A Fabric mod that provides additional information about items and blocks

Mod 2,303,209
Persistent Inventory Search

Persistent Inventory Search

🔎 [Client] Makes search queries remain inside the creative inventory during tab switching and closing.

Mod 680,778
Resourcify

Resourcify

In-game resource pack, data pack and shader browser and updater

Mod 17,168,116
ScalableLux

ScalableLux

A Fabric mod based on Starlight that improves the performance of light updates in Minecraft.

Mod 27,925,769
Scribble

Scribble

Expertly edit your books with rich formatting options, page utilities and more!

Mod 4,133,596
Searchables

Searchables

Searchables is a library mod that adds helper methods that allow for searching and filtering elements based on component...

Mod 219,515,283
ServerLens

ServerLens

A client-side mod that brings the full server preview (MOTD, ping, player count, and favicon) to the Direct-Connect Scre...

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Show Operator Tab

Show Operator Tab

Show Operator Tab mod allows you to see the operator tab in creative inventory without operator status on multiplayer se...

Mod 22,093
Simple Voice Chat

Simple Voice Chat

A working voice chat in Minecraft!

Mod 199,156,886
Sodium

Sodium

The fastest and most compatible rendering optimization mod for Minecraft. Now available for both NeoForge and Fabric!

Mod 404,057,851
spark

spark

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Mod 239,874,095
SuperMartijn642's Config Lib

SuperMartijn642's Config Lib

Config Lib makes dealing with config files just a bit easier.

Mod 221,246,810
Symbol Chat

Symbol Chat

A client side mod that adds a symbol/emoji menu as well as writing in different unicode fonts.

Mod 864,384
Text Placeholder API

Text Placeholder API

Placeholder and Text manipulation library for your Minecraft mods.

Mod 72,293,898
Tooltip Scroll

Tooltip Scroll

The premier Fabric mod that allows you to move/scroll tooltips.

Mod 3,250,647
Tweakeroo

Tweakeroo

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Mod 10,850,512
Very Many Players (Fabric)

Very Many Players (Fabric)

A Fabric mod designed to improve server performance at high playercounts.

Mod 21,202,616
ViaFabricPlus

ViaFabricPlus

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Mod 8,586,240
WorldEdit

WorldEdit

In-game Minecraft map editor - build bigger things more quickly!

Mod 77,812,388
YetAnotherConfigLib

YetAnotherConfigLib

A builder-based configuration library for Minecraft.

Mod 261,649,510
Your Options Shall Be Saved (YOSBS)

Your Options Shall Be Saved (YOSBS)

Preserve player configs when updating modpacks by creating the default config on first launch only and never touching it...

Mod 51,154

External Resources