Sketch the idea
before the design.
A fast, free sketch tool for roughing out a concept before you commit it to a real CAD drawing. Free forever — not free-for-now, not free-with-an-asterisk. No account, no payment.
Free forever · Windows · v0.1.5 (early build, ~11 MB) · Unsigned — Windows SmartScreen may warn ("More info → Run anyway").
WHY SKETCH
Free, forever
No payment, no account, no email wall — permanently. The current build is early (v0.1.5); rough edges expected, feedback welcome.
Lightweight
An ~11 MB Windows app. Small, fast to install, low overhead — not a heavyweight CAD seat.
Ideation before design
Rough out the concept, the routing, the layout — before you commit it to a real CAD drawing in Forms 2D.
Pairs with Forms 2D
Sketch is where you think; Forms 2D is where you draft. Move from a loose idea to a real drawing when 2D ships.
WHAT IT DOES TODAY
- Freehand and shape drawing — pen, lines, rectangles, ellipses, text
- Select, move, and arrange elements on an infinite canvas
- Undo/redo and a command palette
- Runs as a Windows download and in the browser
- Works with no account and no payment — free, forever
- Precision drafting, layers, and dimensioning
- ISA symbols, loop sheets, title blocks, community packs
- DWG import/export
- A portable, shareable project file format
Sketch is for thinking fast and loose. When you need real CAD, that's Forms 2D.
It's v0.1.5 — an early build. Expect rough edges and tell us what breaks: support@formscad.com.