Most pattern work in this hobby still happens by hand in vector editors, where every stitch hole gets placed one by one and a design change means starting the layout over. The maker has built a free, open-source pattern creator that takes a CAD-style approach instead, aiming to blend the precision of CAD software with the feel of design tools like Photoshop. It runs entirely in a browser, so it opens the same way on Linux, Firefox, or anything else, which in my view is a smart call for reaching people who don't want to install anything.
The workflow shown in the demo starts with a hexagon defined by a radius of 70 mm and six sides. Rectangular panels of 100 mm by 30 mm get snapped onto each edge, guided by snapping guides and angle alignment that help attach panels to pattern edges. A sidebar keeps model objects like polylines and rectangles organised, and several components can be collected into one group.
The stitch handling stands out to me. Stitch lines are modifiable and linkable out of the box, and on adjacent flaps they are linked so hole counts stay coordinated. Holes are configured in a modal with style, spacing of 3.85 mm and an inset of 3.00 mm. On the output side, print views stay synchronised with the model, pages are simulated at 210 x 297 mm, and an 8.00 mm corner fillet updates the print preview right away. Oversized patterns split across two sheets with alignment registration guides, which seems genuinely useful for full-size templates.
Not everything is settled. The maker admits corner stitching is awkward right now, with a workaround of converting a short polyline into a stitchline being a hassle and bad UX. A 3D model view also remains undecided, and tutorial videos do not exist yet, though a user manual is available.