Going beyond the core package, there are several tools that extend Kwant in useful ways. You can check these out below.
If you have some re-usable code that you think would be useful to the wider Kwant community, post to the Kwant development mailing list with a link to the code and a couple of sentences describing it, and we'll add it to this page.
Semicon: k·p simulations made easy
Get the code: https://gitlab.kwant-project.org/semicon/semicon
A package of tools for doing k·p simulations. Contains: model definitions, material parameters, and helper functions for generating template Kwant systems.
Get the code: https://arxiv.org/src/1510.06035v2/anc/quasicrystal.py
Code for reproducing numerics from the paper "Aperiodic Weak Topological Superconductors" by Fulga et al. Contains functionality for building 2D Ammann-Beenker tilings, an example of a quasicrystal, and Kwant systems constructed from such tilings.
Get the code: https://gitlab.kwant-project.org/kwant/tkwant
A package for defining time-dependent systems with Kwant, and calculating time-dependent quantities. Details of the algorithm can be found in the following two papers:
Qsymm: Symmetry finder and symmetric Hamiltonian generator
Get the code: https://gitlab.kwant-project.org/qt/qsymm
A package that makes symmetry analysis simple. It automatically generates model Hamiltonians from symmetry constraints and finds the full symmetry group of your Hamiltonian. Works with tight-binging and k dot p Hamiltonians and supports all kinds of symmetries, including conserved quantities, space group symmetries, time reversal, particle-hole and all combinations of these.