All Grease pencil add-on

Blender Development Fund
Asset Library
Blender Development Fund
Asset Library
GreasePencil Halftone Fill
$7

De Wei Shi in Addons

2d Auto Lip Sync (For Cut-Out and Grease Pencil) Now Includes Grease Pencil Layers
$8.54

Vrengkat in Addons

Gp Follow Shapes
$9 Dev Fund Contributor

Malisan Luca in Addons

Greaseliner
$18.00-$20.00 Dev Fund Contributor

Kito Studio in Addons

Grease Pencil Image Importer
$2

GoblinInTheVoid in Addons

Grease Pencil Auto Interpolate
$15

cosmosmythos in Addons

GP Transfer Weights
$7 Dev Fund Contributor

Malisan Luca in Addons

Grease Pencil Shape Builder
$5.99 Dev Fund Contributor

Dantti in Modifier Setups

Simple Sketch Pro
$25

Chipp Walters in Addons

Retime: An Animation Scale That Doesn't Suck
$5

the rabbit man of the wilds in Addons