masa

A mod for dumping game registries, dumping the data for the held or looked at block/entity/item, counting blocks, biomes, entities, block entities from the world etc.

Adds loot tables for the Wither and Ender Dragon

A library mod for client-side mods. Contains most of the common/shared code of masa's client mods, and adds some inter-operation support between the dependent mods.

A client-side schematic mod with extra features for creative mode work

It's raining. The water level is rising...

Kosmolot's unofficial builds/ports of Masa Mods. For use only when there is no official release.

Adds a block that vanishes between a configurable time-of-day window

Allows tweaking some creeper and other explosion properties, like changing the item drop chance, disabling damage, or disabling them completely

Several commands to edit or fix Minecraft worlds

"Items control everything". Adds several blocks/machines that are programmed and controlled by item sequences.

A client mod that adds many shortcuts to move items easier and craft faster in inventory screens

Miscellaneous utility items and blocks, many are "ender themed" and inventory or storage related.

Servux is a server-side mod that provides support for some client-side mods, such as sending structure bounding boxes for MiniHUD

Painted Biomes allows using image templates for the world's biome layout

A client-side mod to show a preview of the block-to-be-placed

A "mini F3" HUD mod, also with various overlays like light level, spawn chunks, slime chunks etc.

Automatic motion and screenshots for timelapses etc.

Various client-side tweaks, such as hand restock, hotbar swap/cycle, flexible/fast block placement etc.

Add custom dimensions, configure existing dimensions, use per-dimension game rules, time, weather etc.

A small mod that can disable some or all of vanilla ore generation (including andesite/diorite/granite and silverfish blocks)