Unified Inventory by RealBadAngel
Replaces the default inventory and adds a number of features, such as a crafting guide
Formation FabLab
A collection by Lemente
Packages
Dreambuilder hotbar expander by mt-mods
Expands the hotbar to up to 32 slots
WorldEdit Undo by Hybrid Dog
Undo and Redo executed WorldEdit chat commands
WorldEdit HUD Helper by Starbeamrainbowlabs
Displays the name of the node you're looking at & your rotation in your HUD. Banish the debug text forever!
K WorldEdit Command Builder GUI by ketwaroo
Alternate worldedit frontend to build and run commands that is agnostic of inventory.
WorldEdit Additions by Starbeamrainbowlabs
Extra tools and commands to extend WorldEdit. Currently has over 70 commands!
WorldEdit by sfan5
In-game world editor. Use it to repair griefing, or just create awesome buildings in seconds.
GGraffiti by grorp
Paint anything! Graffiti for Minetest.
Woolen Mesh Creator by entuland
Not only wool! Miniaturizes builds and allows rebuilding them too
Pickblock by ROllerozxa
Allows you to put the selected node in an empty slot of your hotbar when you're in creative mode.