Cobble vs mDirt

Cobble is free, open-source software under the MIT License that transpiles .cbl source into data packs for Minecraft Java Edition. Its Python-like language supports functions, indentation, imports, control flow and static type inference for variables, constants and expressions. Output can include .mcfunction files, pack metadata, tags, predicates, advancements, loot tables, recipes, item modifiers, dialogs and other JSON resources. Cobble handles command JSON safety, macro parameters and command validation, with standard-library helpers for events, text, scoreboards, storage, item components, schedules, selectors, positions, bossbars, teams and entities. The command-line workflow covers project initialization, formatting, building, checking, watching, validation, inspection, linking, cleaning and ZIP creation. The stable release installs with cargo install cobble-lang --locked. A browser compiler runs the Rust parser and transpiler through WebAssembly and can download generated files or a data-pack ZIP. The listed target is Minecraft Java Edition 26.1.2 with pack format 101.1. Cobble is pre-1.0 and actively developed, so bugs and API changes may occur.

mDirt is a free Windows GUI for creating custom Minecraft datapacks without coding. Guided generators cover blocks, items, recipes, paintings, structures, and equipment, with built-in validation for their fields. The application exports a datapack and resource pack into an exports folder. Structure tools accept Minecraft-generated .nbt files and let users specify details such as spawn rules. Equipment creation includes options such as horse armor, item textures, model textures, and armor points. The README lists full feature support for Minecraft 1.21.4, 1.21.5, 1.21.6, 1.21.7, and 1.21.8. A beta release adds text and potion generators; the potion generator outputs a /give command, while text click and hover events are unsupported. That beta may contain incomplete or unstable features while the interface is refined. mDirt runs on Windows 10 or later, comes as an installer or portable ZIP, requires 130 MB of free disk space, and recommends at least 4 GB of memory. It uses GPL-3.0.