Important: Within the first two weeks of your purchase you can use the full amount you've paid towards the upgrade to the Ultimate Bundle: Appetite For (3D) Construction (contact me).
https://blendermarket.com/products/sketchncarve-ultimate-bundle-appetite-for-construction

Also see Wear N' Tear and Rock Star for incredible bargains.

Sketch N' Carve is an artist friendly modeling tool designed to simplify and speed up 3D modeling by taking advantage of Blender's Grease Pencil tools. It enables the user to sketch and convert any drawing to 3D geometry with a single click. It is an alternative way to modeling that gives the user tremendous artistic freedom and speed and the ability to model without ever having to touch a single vertex.

The 2D artist will find Sketch N' Carve particularly intuitive!

Whether you are a 2D artist or a 3D artist, Sketch N' Carves rich set of features that range from modeling to animation and simulation, from mesh geometry to curves, will satisfy all your modeling needs and then some! Now with Shape Animation!

Sketch N' Carve works with all versions of Blender from 2.90 to the latest release.
Free updates to constantly increasing and improving tool set.

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CURRENT VERSION: Sketch N' Carve: 4.2.1w
                                  Sketch N' Carve CORE: 4.1.0d
                                  Sketch N' Simulate: 1.1.0p
                                  SketchN Camera Controls: 4.2.2b
                                  SNC_Enable_Disable: 1.0.1

Sketch to Geometry with a single click.

ADD (Union), REMOVE (Difference), Intersect and Slice (Thickness).

Destructive or Nondestructive Workflow

Sketch, Extrude (with Subdivide), Randomize, Twist and Scale.

Join Strokes, Join Sketchy, Join Shapes and Concentric Shapes drawing styles.

Draw on surface, Project Strokes to Surface, Shrink Wrap.

Mirror

Carve.

Carve the carver object (Non Destructive)

Spin.

Array.

Array and Spin.

Curve Deform.

Curve Deform with Custom Curve.

Stroke,

Lines Only,

Simplified,

Cubic profile,

Taper On,

Taper Flipped.

Curve Objects

Custom Profile and Custom Taper

Random Extrusion Length

Knife Tool

Self Trim

Poke

Dice and Tilt(Curve Deform)

Subdivision Surfaces / Crease

2D and 3D Smooth (Round objects without increasing the poly count)

Cage (Mesh) Modifier

Slice, Slash And Simulate