If you are already using deal.II: Our institutes are evaluated at regular intervals. Consequently, we need to document the use of the programs and libraries we create. If you have written publications (including Diploma, Masters or PhD theses) with the help of deal.II that are not already listed here, please let us know about it by sending an email with the reference to Wolfgang Bangerth or any of the other authors of deal.II.


Confused about download and installation options?
We provide various options to help you with the installation of deal.II and its dependencies. Please see the Getting deal.II wiki page for more information and do not hesitate to ask on the deal.II discussion group for help.

Current release: 9.5.2


dealii-9.5.2.tar.gz: mirror, github
(PGP signature file: mirror, github)
January 31, 2024, 31MB.

sha256: 7930e5218a9807d60cc05c300a3b70f36f4af22c3551a2cd1141fbab013bbaf1

See README for installation instructions or open doc/readme.html after unpacking.

Offline documentation

dealii-9.5.0-offline_documentation.tar.gz: mirror, github
(PGP signature file: mirror, github)
January 31, 2024, 398MB.

sha256: b2eb6e37b1847d663f8252c19e53e6fe4d4e5697b62cbb23ba124ab407706f96

Previous versions

Older deal.II releases can be found on the Github release page, or on the mirror.

Development sources

To stay in sync with the most recent development version, have a look at our git repository hosted on github. This provides the latest features (as well as the latest bugs.) You can clone the repository directly on the command line via

  git clone https://github.com/dealii/dealii.git

To see what is going on, explore the changelog on github.

Contributing to the deal.II development is easy and is best done by forking the deal.II repository. To do this, create an account on github and then, when you're logged in, click on the "Fork" button at the top right of the deal.II github page. There are good tutorials on how to contribute to projects at github's front page. An introduction to how git works can be found here or here.

Installers and images

Mac OS packages

dealii-9.5.0-ventura-intel.dmg, see mirror, github
(PGP signature file: mirror, github)
dealii-9.5.0-ventura-arm64.dmg, see mirror, github
(PGP signature file: mirror, github)
July 14, 2023, 848MB.
Mac OSX Instructions

Virtual Machine Image

An image for virtualbox gives you a complete environment to try out deal.II and works on Mac OS, Linux, and Windows:
More information

Dockerized installation

Several docker images with full installations of deal.II and (almost) all its dependencies are available on Docker HUB. These images are guaranteed to work identically on Mac OS, Linux, Windows, on Travis CI, and on gitlab CI. See, for example, the Wiki page on Docker-Images to use these images in your own application with Travis CI, gitlab CI, or github actions.

Source-based Installers

candi is a source based installer for deal.II for various Linux systems that can configure and compile many dependencies for deal.II with minimal effort.

deal.II is also distributed in Spack, a package manager for supercomputers, Linux and Mac OS. With Spack you can build packages with multiple versions, configurations, platforms, and compilers. See the deal.II Spack Wiki page for details.

Linux distributions

Arch Linux

deal.II is available in the AUR: the snapshot file is available for download here.


deal.II is available in Debian (stretch or newer). Package information can be found here. Install the development package libdeal.ii-dev. Information about backports of the newest deal.II release is available in here.


deal.II is available in Ports. The package is called deal.ii.


deal.II is readily packaged in Gentoo. The package is called sci-libs/dealii.


deal.II is available in Ubuntu LTS 20.04 and newer. Package information can be found here. Install the development package libdeal.ii-dev.
See our Debian and Ubuntu Wiki Page for more information.

Backports of the deal.II realease to the current stable and lts releases can be obtained here: PPA for 9.5.1, PPA for 9.4.0, PPA for 9.3.2, PPA for 9.2.0, PPA for 9.1.0. Just follow the instructions on how to add the PPA and install the development package libdeal.ii-dev afterwards.
See our Debian and Ubuntu Wiki Page for more information.