Datapack Editor vs JMC

Datapack Editor is a free creator and editor for Minecraft datapacks. It supports Minecraft 1.20.2–1.20.6, corresponding to datapack versions 18–41, and provides syntax highlighting, error checking, and suggestions and completion for mcFunction and JSON files, including nested constructs. Users can open or create projects, validate mcFunction and JSON files, and work across multiple roots. Projects can declare datapack dependencies in dependencies.json. Navigation and editing features include Ctrl-click symbol navigation, multiple tabs and views, quick file opening, and search across files. Custom themes and plugins are supported. Windows users download and extract a ZIP, then run start.cmd; Linux instructions say to extract the ZIP and run the Datapack Editor file. The listed Linux distribution is Debian. macOS support is experimental, and users must build the app themselves. The repository lists an Apache-2.0 license. The README warns that Avast, AVG, and Zillya may flag the Windows executable, describing those alerts as false positives.

JMC has no write-up on Specifiction yet; its figures are above.