Debug
LMD

Debugging on steroids

Tomahawks and Throwing Knives
Pixelated

Introduces new weapons

potal launcher
Soundwavez

Potal Launcher

Jetpack
Sumi

Adds a jetpack and fuel.

Minetest test framework
BuckarooBanzai

Provides an api to register test functions for integration-tests.

Mod list
SkyBuilder1717

Adds new UI for /mods command

scaffolding (flux's version)
fluxionary

scaffolding, to help in building projects.

No Map
DarkXWolf17

Reject tradition, embrace modernity. For those tired of default MTG maps. Crafting recipes for TechAge hackers available.

Hard Trees
octacian

Require tools to break trees and introduce beginner-tier rock tools.

Aquamarine
RasPiManiac

Adds Aquamarine ore, ingots, etc.

Nodecore Paint
Kimapr

Paint anything on node surfaces

Copper Armors and Tools
michi16bit

Add Armors and Tools of Copper (and variant)

Clean unknown recipes
1F616EMO

Remove recipes referencing to unknown items

Metallicum
Ludus

The power of Titanium!

Public Inventory Plus
activivan

Adds a public inventory.

Fireworks Redo
niwla23

Adds some better looking fireworks

Raining Death
aether123

TNT Rains from the Sky

Unbreaking
ApolloX

Be more forgiving for those who are tired of their tools and/or armor breaking.

My Mason Hammer
Don

A hammer to make stairs, ladders and footholds

Ejection
Yof

A unique movement mechanic resembling strong jumping.

Multitools
ChimneySwift

Adds a series of multi-purpose tools

Fbt WiTT
Forburnt

WAILA-like mod (a rewrite of WiTT by MightyAlex200)

Hedges
Shara

Adds connected hedges that that can be crafted from leaves.

Areas' helper tools
rangeTonic

Convenient tools for Areas protection mod

Fancy Place
DragonWrangler

Better block placement system that allows you to place blocks even when not pointing at the connecting face.

Guinea pig
DrPlamsa

Adds guinea pigs.

Chatsound
Hanicef

Adds a notification sound when a player sends a chat message

Flow Inspector
Luke

An "inspect element" helper for flow GUIs

Better Randomizer
ThePython10110

Randomizes node drops, mob drops, and crafting recipes

Bones Redo
OgelGames

Adds bones that generate on death

Node Touch Action
Neuromancer

Pass in a node name and a function, and every time a player touches that node, the function happens

item_magnet
fluxionary

a magnet for picking up items

Upgrade Packs
Krock

Provides craftable packs to players to increase their health and breath

Variety Fork
awuuwa

Fork of Atlante's Variety

TPH's Wielditem
TPH

Wielded Item Events with Prepackaged Wield3d + Wielded Light Functionality!

Mystical Tools
liteninglazer

tool progression past diamonds and adds mystical staffs and wands

Treasure chest
ZenonSeth

Adds a block called Treasure Chest that hands semi-randomized rewards on a timer.

Gauges
Calinou

Adds health and breath gauges above players.

Death Cetro
1faco

Adds a Staff thats teleports you to your last death position.

Reinforced Diamond Tools
ImAlreadyHere

A sword and a pickaxe that are really strong and can be crafted with diamond blocks and sticks.