Permpack is a SageMath package aiming to automate flag algebras computations. It is meant to be very simple to start using (no installation trouble) and intuitive to continue using (friendly syntax and output). Permpack only supports one kind of structure: permutations. If you need to flag other structures (graphs, 3-regular hypergraphs, directed graphs, multigraphs) have a look at Flagmatic by Emil Vaughan (2013). The original Flagmatic-2.0 (with only installation modifications to run on Sage 7.2) can be found here. I wrote Permpack instead of modifying Flagmatic because it was simpler.
Click on one of the buttons in the upper left part of the page to download permpack. Then follow the instructions in the README file. You will need Sage. It can be obtained from SageMath.org.
In the future, I will add information about usage too.
The first item in the list is Razborov's original paper. The remaining papers/notes/theses are much easier to read. All texts explain flag algebras on graphs or 3-regular hypergraphs.
Having trouble with permpack? Contact me and I may be able to help. Or even better, have a look at the code and make improvements! Thanks.