TAUCS is a C library of sparse linear solvers.

Features:
* Multifrontal Supernodal Cholesky Factorization
* Left-LookingSupernodal Cholesky Factorization
* Drop-Tolerance Incomplete-Cholesky Factorization
* LDL^T Factorization
* Out-of-Core, Left-Looking Supernodal Sparse Cholesky Factorization
* Out-of-Core Sparse LU with Partial
* Pivoting Factor and Solve
* Ordering Codes and Interfaces to Existing Ordering Codes
* Matrix Operations, Matrix Input/Output, Matrix Generators
* Iterative Solvers
* Vaidya's Preconditioners
* Recursive Vaidya's Preconditioners
* Multilevel-Support-Graph Preconditioners.