Download Source

If you are interested in the dlvhex sourcecode, you may choose between the latest (stable) release version and the (most recent but possibly unstable) development version.

Note that this page is only about dlvhex 2.X because dlvhex 1.X is no longer supported and should not be used anymore. However, if you depend on 1.X (e.g. because a plugin is not available for 2.X), you may visit the old download page (distribution as sourcecode only).

Latest Release Version

You can download stable release versions of dlvhex and its plugins at the dlvhex SourceForge File Releases. Installation instructions are given in the INSTALL and README files of the dlvhex and plugin source directories. Changes between versions can be found in the NEWS files and in detail in the ChangeLog files.

dlvhex core All platforms Description
dlvhex core Sourcecode 2.5.0 Download The core system (required for all plugins below).

The release versions of some core plugins are listed below.

Regarding versions note that dlvhex 2.X uses contains a new ABI versioning framework to improve plugin compatibility handling. For details see LibraryVersions.

Plugin All platforms Description
Aggregate Plugin Sourcecode Download Simple plugin with aggregate functions.
MCSIE-Plugin Sourcecode Download MCS-IE Plugin, see the MCS-IE homepage.
Script Plugin Sourcecode Download Simple plugin that can execute scripts and does some I/O.
String Plugin Sourcecode Download Operates on strings, see the string-plugin documentation
Wordnet Plugin Sourcecode Download Interface to the Wordnet library.

dlvhex works under UNIX-based operating systems like Linux and Mac OS X and Microsoft Windows.

Development Version

The current development version of dlvhex plus plugin-suite is hosted at github in the hexhex Collection.

The dlvhex core code can be retrieved by executing

git clone --recursive git://
(readonly) or for read-write access (if you are allowed to commit) with
git clone --recursive

Confer MAINTAINER-README and README for the list of packages you need to compile the development version of dlvhex.

You can checkout the plugins using the same command (do not forget --recursive) on the other repositories which are parte of the hexhex organization.


Whenever you use a git version of dlvhex, do not forget to clone with

git clone --recursive
and do not forget to run
after cloning. (After ./ you can continue with ./configure as shown below.)

Per default, dlvhex will build with gringo and clasp which is contained in the dlvhex tarball.

If dlv is found in the path, then dlv can be used as backend.

To work with the DL-plugin, you will also need the DL-reasoner RacerPro.

To work with the WordNet-plugin, you will also need Wordnet installed.

Compiling Source Packages Primer

Requirements for compiling dlvhex: the inevitable Boost C++ libraries (available as packages for all major distributions).

dlvhex is installed with the usual sequence:

make install

If you don't want a system-wide installation or don't have root-permissions, use

./configure --prefix=/path/to/dir

where /path/to/dir is the desired target prefix. There, the usual bin/ and lib/ will be created, if necessary.

For installing a plugin, again do:

make install

The plugin library will be installed in ${prefix}/lib/dlvhex/plugins, where ${prefix} was determined by the dlvhex installation. If you use

./configure --enable-userinstall

instead, the plugin will be put in ~/.dlvhex/plugins/.

Useful Links

Download dlvhex releases
Download dlvhex-semweb releases
Browse source code on


dlvhex source code @

Popular Plugins
Action Plugin
DecisionDiagrams Plugin
Description Logics Plugin
Description Logics Lite Plugin
MELD: Belief Merging Plugin
Nested HEX Plugin
MCSIE Plugin
String Plugin
dlvhex-semweb Project

User Guide
Writing Plugins in C++
Writing Plugins in Python