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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

1,734

Modrinth ID

oUEnwz5P

Last Updated

Sep 1, 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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Simple Voice Chat

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Mod 61,371,098
Concurrent Chunk Management Engine (Fabric)

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Freecam

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A highly customizable freecam mod.

Mod 19,549,525
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Fast IP Ping

Yeet the laggy reversed DNS lookup for literal IP server addresses

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clientcommands

clientcommands

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Mod 75,051,634
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Mod 52,525,506
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My Resource Pack, My Choice

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Mod 144,380
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Mod 8,071,179
Resourcify

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Mod 15,075,698
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Scribble

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Mod 3,495,125
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Component Viewer

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Tweakeroo

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

Mod 651,402
ViaFabricPlus

ViaFabricPlus

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Mod 7,693,247
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Peek

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Mod 46,175
Confirm Disconnect

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Mod 207,750
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Mod 2,789
Camera Enhancements

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Show Operator Tab

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External Resources