Flatsonar

Seamly2D

by Seamly2D project

Sewing pattern design software

Broad permissions Verified creator GPL-3.0+ vv2026.9.14.145

Support the creators

Flatsonar is just the shop window. The people below made Seamly2D.

Screenshot 1 of Seamly2D

About

Seamly2D is pattern design software to create reusable, scalable, sharable custom-fit patterns using bespoke tailoring, haute couture, and historical pattern drafting techniques. Seamly2D saves time and improves fit by creating patterns that are reusable parametric CAD engineering documents.

Unlike other pattern design software, Seamly2D allows designers to have complete control of the patternmaking process. Each reusable, scalable pattern can read multi-size tables for boutique sizing, and read individual measurement files for custom-fit.

Seamly2D is open source software released under the GPLv3+ license. Seamly2D is available for Windows, MacOS, and Linux. Learn more about Seamly2D by joining our active, friendly community at https://forum.seamly.io

Permissions

1 permission weaken the sandbox. Flatsonar asks before installing.

  • full access to your home folder
    --filesystem=home
  • inter-process communication (needed for X11)
    --share=ipc
  • printing
    --socket=cups
  • X11 display, only when Wayland is unavailable
    --socket=fallback-x11
  • audio
    --socket=pulseaudio
  • Wayland display
    --socket=wayland
  • GPU acceleration
    --device=dri
  • access to xdg-config/kdeglobals
    --filesystem=xdg-config/kdeglobals:ro
  • talks to com.canonical.AppMenu.Registrar
    --talk-name=com.canonical.AppMenu.Registrar
  • talks to org.kde.kconfig.notify
    --talk-name=org.kde.kconfig.notify
  • talks to org.kde.KGlobalSettings
    --talk-name=org.kde.KGlobalSettings

Who publishes this

The creator demonstrably controls this app id: Flathub verification, the hosting account owns the namespace, or a well-known file on their domain.

  • verified on Flathub: the developer proved they control this app id
    publisher:flathub

Maintenance

Recent activity on the upstream repository, or built and reviewed by Flathub.

No staleness signals: recent activity, or built and reviewed by Flathub.