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Seamly Banner


Seamly2D is pattern design software to create reusable, scalable, sharable custom-fit patterns with using historical, couture and bespoke pattern 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

Supported platforms:

  • Windows XP SP2 (32-bit) or later
  • Ubuntu Linux 14.04 (32-bit/64-bit) or later
  • OpenSUSE 13.02 (32-bit/64-bit) or later
  • Fedora 24 (32-bit/64-bit) or later
  • Mac OS X 10.8 (64-bit) or later

Seamly2D Community Resources:

Download Seamly2D code


Mac OS X


release version:

sudo add-apt-repository ppa:susan-spencer/seamly2d  
sudo apt-get update  
sudo apt-get install seamly2d  

development version:

sudo add-apt-repository ppa:susan-spencer/seamly2d-dayly-build  
sudo apt-get update  
sudo apt-get install seamly2d  

Build Seamly2D

Basic Software Prerequisites:

Learn Seamly2D development methods and styles:

Learn Seamly2D build method:

Install Additional Libraries and Programs:

Linux (general)

  • For Linux in general, these additional tools and libraries may be required:
  • g++ compiler (at least GCC 4.7 is needed and GCC 4.8 is recommended) OR clang (minimum clang 3.4 (2014), current 5.0 (2017)),
  • xpdf (pdftops)
  • OpenGL libraries
  • Qt build libraries*
  • XMLpatterns qt5 xml bindings
  • All Qt-tools come as qmake-qt5, etc. If you build from command line instead of within Qt Creator, run the following prior to running qmake-qt5:
    export QT_SELECT=5
  • The default prefix for command make install is /usr. For using another prefix build with qmake command:
    qmake PREFIX=/usr/local PREFIX_LIB=/usr/lib/i386-linux-gnu -r CONFIG+=noDebugSymbols CONFIG+=no_ccache

where /usr/local is a new prefix for installation binary files and /usr/lib/i386-linux-gnu is new prefix for install libraries. Add path to Qt using .bashrc


sudo yum groupinstall "C Development Tools and Libraries"  
sudo yum install mesa-libGL-devel  


sudo zypper install -t pattern devel_basis  


  • Install the following packages:
  sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test     
  sudo apt-get -qq update  
  sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-5 60 --slave /usr/bin/g++ g++ /usr/bin/g++-5  
  sudo apt-get install -y build-essential mesa-utils mesa-common-dev libgl1-mesa-dev  
  sudo apt-get install -y poppler-utils  
  sudo apt-get install -y g++-5  
  sudo apt-get install -y xpdf  
  sudo apt-get install -y xvfb  
  sudo apt-get install -y libfontconfig1-dev libfreetype6-dev  
  sudo apt-get install -y libx11-devlibxext-dev libxfixes-dev libxi-dev  
  sudo apt-get install -y libxrender-dev libxcb1-dev libx11-xcb-dev libxcb-glx0-dev
  sudo apt-get install -y libqt5xmlpatterns5-dev
  • Manually retrieve and install ccache
sudo dpkg -i ccache_3.3.4-1_amd64.deb
  • Install Qt
  • If Qt is not completely installed on your distrubution, uninstall Qt then install Qt from ppa. Use ppa for your distribution, this example is from Trusty:
sudo add-apt-repository -y ppa:beineri/opt-qt592-trusty  
sudo apt-get -qq update  
sudo apt-get install -y qt59-meta-full qt59-meta-dbg-full qt59creator  
  • Configure Qt environment variables:
sudo chmod +x /opt/qt59/bin/  
sudo /opt/qt59/bin/  


--> Would some of our Mac devs fill in this section?


  • Install the following packages:
  • Add paths for Qt and mingw to the Windows PATH environment variable through Control Panel:
     [Control Panel|System And Security|System|Advanced Tab|Environment Variables button]

Additional Information about Qt

  • After Seamly2d, gcc or mingw, xpdf, and Qt or QtCreator installation, add their paths (eg c:\Qt\%VERSION%\bin)to your operating system's PATH environment variable via Linux .bashrc or Windows' Control Panel.
  • Use QtChooser to update and set the latest QT version as default.
  • Within QtCreator select your compiler in the compiler kit, and assign the compiler kit to your project. This automatically defines your Qt variables for compilers, debuggers, etc.
  • You can build Seamly2D from within the QtCreator IDE (see forum post) OR from command line using Qt's qmake-qtx from a terminal window:
qmake ..\ -r CONFIG+=noDebugSymbols CONFIG+=no_ccache
make (or mingw32-make or nmake or jom, depending on your platform)


Seamly2D is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

Seamly2D is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

See LICENSE_GPL.txt file for further information

Other components released under:

  • QMuParser - BSD license
  • VPropertyExplorer - LGPLv2.1 license
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