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Welcome to Coin3D!

Coin3D is a high-level, retained-mode toolkit for effective 3D graphics development.
It is API compatible with Open Inventor 2.1.

Coin3D is Free Software, published under the BSD 3-clause license.

BSD and Bitbucket?? Coin3D used to be a commercial product, right?

From 1998 to 2011 Coin3D was developed and maintained by Systems in Motion (SIM), later renamed to Kongsberg SIM, later merged into the parent company Kongsberg Oil & Gas Technologies (Kongsberg).
During this period Coin3D was available under a dual licensing scheme, offering the choice between GPL or a Professional Edition License.
Mid-2011, Kongsberg decided to end Coin3D as a commercial product due to diminishing demand and changing business focus.
As a service to the user community Kongsberg re-licensed Coin3D under the BSD 3-clause license.

This letter was sent to Professional Edition License holders and the mailing lists in November 2011.

The old web site has been shut down, and all requests are redirected to this page.

Learn more about Coin3D

Join the discussion

There is a mailing list on Google Groups.

Building the libraries from source

Fork instructions

If you are going to make a fork of the coin repository, be sure to also fork the subrepositories

Without these you will get 404 errors when you try to clone or update from your new fork.

The subrepositories are listed in .hgsub , and the full documentation of Mercurial subrepositories is at


If you make improvements in your fork then please take the time to make a pull request so others can easily make use of it.
These are the people that are on the team with the power to accept your PR.
If you want to be on the team, then drop a line in the mailing list, Roy and Bastiaan will be able to add you to it.