Anonymous access of the project:
https://sourceforge.net/p/qstopmotion/code/ci/default/tree/ (read-only)
In the qStopMotion project we use Mercurial for the source code management. To access the sources as a developer, please create an account on Sourceforge.net and then register as a qStopMotion developer. Now you have access to the sources using your Sourceforge account:
hg clone https://USERACCOUNT@hg.code.sf.net/p/qstopmotion/code
More information about the development you can find on the development site of the project and on the project site on SOURCEFORGE.