Generalized Eigenvalue Solver
- By Arkady V. Krasheninnikov.
- http://beam.acclab.helsinki.fi/~akrashen/esctmp.html

Hapack: Software for (skew-)Hamiltonian Eigenvalue Problems
- Fortran 77 routines by Peter Benner and Daniel Kressner.
- http://www.tu-chemnitz.de/mathematik/hapack/

SLEIGN2
- Code to compute eigenvalues and eigenfunctions of regular and singular self-adjoint Sturm-Liouville problems.
- http://www.math.niu.edu/SL2/

Laso
- Fortran IV subroutines for computing a few eigenvalues of a large (sparse) symmetric matrix.
- http://www.netlib.org/laso/index.html

Lanz
- Solves the large, sparse, symmetric generalized eigenproblem.
- http://www.netlib.org/lanz/index.html

Lanczos
- Codes to compute eigenvalues and eigenvectors using the Lanczos algorithm.
- http://www.netlib.org/lanczos/index.html

EISPACK
- A collection of Fortran subroutines that compute the eigenvalues and eigenvectors of nine classes of matrices: complex general, complex Hermitian, real general, real symmetric, real symmetric banded, real symmetric tridiagonal, special real tridiagonal, g
- http://www.netlib.org/eispack/

Eigenvalues of Laplacian in the L-shaped domain
- By A.L. Skorokhodov and A. Knyazev.
- http://www-math.cudenver.edu/~aknyazev/software/L/

ARPACK
- Package for large-scale eigenvalue problems.
- ftp://ftp.caam.rice.edu/pub/people/sorensen/ARPACK