All Modeling tools

Blender Development Fund
Asset Library
Blender Development Fund
Asset Library
G-Lasso Draw
$25

Bookyakuno in Addons

Ezlattice: Feature Packed Blender Add-On For Deforming/Reshaping Models Quickly In Edit/Object Modes
$11

Mechanical Mustache in Addons

Spider Web Generator
$19.99 Dev Fund Contributor

SingleVector in Modifier Setups

Game Dev Tools For 2.79 And 2.80
$10

zebus3d in Addons

Ultimaze [Pro]
$15 Dev Fund Contributor

Integrity Software & Games in Addons

Lapineige's Tools V2.9 - Add-Ons Compilation To Make Your Life Easier
$4.99 Dev Fund Contributor

lapineige in Addons