deal.II
| deal.II | |
|---|---|
| Release | 2000 |
| Stable release | 9.8.0
/ 9 August 2026 |
| Written in | C++ |
| Operating system | Linux, macOS, Microsoft Windows |
| Type | Finite element analysis |
| License | GNU Lesser General Public License 2.1 or later |
| Website | dealii |
| Repository | |
deal.II is a free, open-source library to solve partial differential equations using the finite element method. The current release is version 9.8, released in August 2026. The founding authors of the project — Wolfgang Bangerth, Ralf Hartmann, and Guido Kanschat — won the 2007 J. H. Wilkinson Prize for Numerical Software for deal.II. The library's then-developers also won the 2025 SIAM/ACM Computational Science and Engineering Prize. Today, it is a worldwide project managed by around a dozen "Principal Developers"; over the years several hundred people have contributed substantial pieces of code or documentation to the project.