mineQuery

Features inspired by my friends or myself are available in mineQuery. And everything can be disabled and configured in config.

HarvestX

Disables destroying immature crops, the bottom block of cactus/sugar cane, and pumpkin/melon stems.

Replanting (ReSeeding)

Automatic replants crops on harvest with the seed held in your hand. Depends on HarvestX.

NotHit

Disables attacking Villagers and Iron Golems.

AutoRevive

Automatically respawns on death

Calculation Command

Calculates equations automatically using '/= {expression}'

Location Convert Command

Uses '/localc <toNether/toOverworld> ' to convert coordinates from different dimensions.

Key2Cmd

Set a keybind to send a command or message.

NotPlace!

Use a stick named 'NotPlace' to enable/disable placing on the sides of a block. Useful for Skyblock players trying to place a floor.

Feed'em

Right-clicks all animals nearby when you shift. Can be used for breeding animals, or shearing sheep.

Thank @hdpow for improving the description.