Ontop 5.5.0

Ontop

The Ontop framework is an open source project available under the terms of the
Apache 2.0 License.

• Current version: 5.5.0
• Release date: 14/02/2026
• Changelog

Downloads

Command line interface of Ontop

• ontop-cli-[version].zip

Platform-specific Ontop Protégé bundles with JRE 11 embedded

• ontop-protege-bundle-linux-[version].tar.gz: Linux bundle (start with run.sh)
• ontop-protege-bundle-macos-[version].zip: macOS bundle (first run: right click Protégé.app and select Open in
  the warning dialog)
• ontop-protege-bundle-windows-[version].zip: Windows bundle (start with run.bat or Protege.exe)

Platform-independent Ontop Protégé plugin and bundle (JRE 11 needs to be installed manually)

• it.unibz.inf.ontop.protege-[version].jar: platform-independent plugin (drop it into Protege’s plugins folder).
• ontop-protege-bundle-platform-independent-[version].zip: platform-independent plugin (start with run.sh, run.command
  or run.bat)

Links

• Official Website: https://ontop-vkg.org
• Download (Github): https://github.com/ontop/ontop/releases
• Download (Sourceforge): http://sourceforge.net/projects/ontop4obda/files/
• Docker Hub: https://hub.docker.com/r/ontop/ontop
• Google Group: https://groups.google.com/forum/#!forum/ontop4obda
• Source Code: https://github.com/ontop/ontop
• Facebook: https://www.facebook.com/obdaontop/
• Twitter: https://twitter.com/ontop4obda
• Issue Tracker: https://github.com/ontop/ontop/issues

ontop-5.3.1

Ontop

The Ontop framework is an open source project available under the terms of the
Apache 2.0 License.

• Current version: 5.3.1
• Release date: 29/09/2025
• Changelog

Downloads

Command line interface of Ontop

• ontop-cli-[version].zip

Platform-specific Ontop Protégé bundles with JRE 11 embedded

• ontop-protege-bundle-linux-[version].tar.gz: Linux bundle (start with run.sh)
• ontop-protege-bundle-macos-[version].zip: macOS bundle (first run: right click Protégé.app and select Open in
  the warning dialog)
• ontop-protege-bundle-windows-[version].zip: Windows bundle (start with run.bat or Protege.exe)

Platform-independent Ontop Protégé plugin and bundle (JRE 11 needs to be installed manually)

• it.unibz.inf.ontop.protege-[version].jar: platform-independent plugin (drop it into Protege’s plugins folder).
• ontop-protege-bundle-platform-independent-[version].zip: platform-independent plugin (start with run.sh, run.command
  or run.bat)

Links

• Official Website: https://ontop-vkg.org
• Download (Github): https://github.com/ontop/ontop/releases
• Download (Sourceforge): http://sourceforge.net/projects/ontop4obda/files/
• Docker Hub: https://hub.docker.com/r/ontop/ontop
• Google Group: https://groups.google.com/forum/#!forum/ontop4obda
• Source Code: https://github.com/ontop/ontop
• Facebook: https://www.facebook.com/obdaontop/
• Twitter: https://twitter.com/ontop4obda
• Issue Tracker: https://github.com/ontop/ontop/issues

Ontop 5.4.0

Ontop

The Ontop framework is an open source project available under the terms of the
Apache 2.0 License.

• Current version: 5.4.0
• Release date: 28/09/2025
• Changelog

Downloads

Command line interface of Ontop

• ontop-cli-[version].zip

Platform-specific Ontop Protégé bundles with JRE 11 embedded

• ontop-protege-bundle-linux-[version].tar.gz: Linux bundle (start with run.sh)
• ontop-protege-bundle-macos-[version].zip: macOS bundle (first run: right click Protégé.app and select Open in
  the warning dialog)
• ontop-protege-bundle-windows-[version].zip: Windows bundle (start with run.bat or Protege.exe)

Platform-independent Ontop Protégé plugin and bundle (JRE 11 needs to be installed manually)

• it.unibz.inf.ontop.protege-[version].jar: platform-independent plugin (drop it into Protege’s plugins folder).
• ontop-protege-bundle-platform-independent-[version].zip: platform-independent plugin (start with run.sh, run.command
  or run.bat)

Links

• Official Website: https://ontop-vkg.org
• Download (Github): https://github.com/ontop/ontop/releases
• Download (Sourceforge): http://sourceforge.net/projects/ontop4obda/files/
• Docker Hub: https://hub.docker.com/r/ontop/ontop
• Google Group: https://groups.google.com/forum/#!forum/ontop4obda
• Source Code: https://github.com/ontop/ontop
• Facebook: https://www.facebook.com/obdaontop/
• Twitter: https://twitter.com/ontop4obda
• Issue Tracker: https://github.com/ontop/ontop/issues

Ontop 5.3.0

Ontop

The Ontop framework is an open source project available under the terms of the
Apache 2.0 License.

• Current version: 5.3.0
• Release date: 18/02/2025
• Changelog

Downloads

Command line interface of Ontop

• ontop-cli-[version].zip

Platform-specific Ontop Protégé bundles with JRE 11 embedded

• ontop-protege-bundle-linux-[version].tar.gz: Linux bundle (start with run.sh)
• ontop-protege-bundle-macos-[version].zip: macOS bundle (first run: right click Protégé.app and select Open in
  the warning dialog)
• ontop-protege-bundle-windows-[version].zip: Windows bundle (start with run.bat or Protege.exe)

Platform-independent Ontop Protégé plugin and bundle (JRE 11 needs to be installed manually)

• it.unibz.inf.ontop.protege-[version].jar: platform-independent plugin (drop it into Protege’s plugins folder).
• ontop-protege-bundle-platform-independent-[version].zip: platform-independent plugin (start with run.sh, run.command
  or run.bat)

Links

• Official Website: https://ontop-vkg.org
• Download (Github): https://github.com/ontop/ontop/releases
• Download (Sourceforge): http://sourceforge.net/projects/ontop4obda/files/
• Docker Hub: https://hub.docker.com/r/ontop/ontop
• Google Group: https://groups.google.com/forum/#!forum/ontop4obda
• Source Code: https://github.com/ontop/ontop
• Facebook: https://www.facebook.com/obdaontop/
• Twitter: https://twitter.com/ontop4obda
• Issue Tracker: https://github.com/ontop/ontop/issues

Ontop 5.2.1

Ontop

The Ontop framework is an open source project available under the terms of the
Apache 2.0 License.

• Current version: 5.2.1
• Release date: 24/11/2024
• Changelog

Downloads

Command line interface of Ontop

• ontop-cli-[version].zip

Platform-specific Ontop Protégé bundles with JRE 11 embedded

• ontop-protege-bundle-linux-[version].tar.gz: Linux bundle (start with run.sh)
• ontop-protege-bundle-macos-[version].zip: macOS bundle (first run: right click Protégé.app and select Open in
  the warning dialog)
• ontop-protege-bundle-windows-[version].zip: Windows bundle (start with run.bat or Protege.exe)

Platform-independent Ontop Protégé plugin and bundle (JRE 11 needs to be installed manually)

• it.unibz.inf.ontop.protege-[version].jar: platform-independent plugin (drop it into Protege’s plugins folder).
• ontop-protege-bundle-platform-independent-[version].zip: platform-independent plugin (start with run.sh, run.command
  or run.bat)

Links

• Official Website: https://ontop-vkg.org
• Download (Github): https://github.com/ontop/ontop/releases
• Download (Sourceforge): http://sourceforge.net/projects/ontop4obda/files/
• Docker Hub: https://hub.docker.com/r/ontop/ontop
• Google Group: https://groups.google.com/forum/#!forum/ontop4obda
• Source Code: https://github.com/ontop/ontop
• Facebook: https://www.facebook.com/obdaontop/
• Twitter: https://twitter.com/ontop4obda
• Issue Tracker: https://github.com/ontop/ontop/issues

Ontop 5.2.1-rc1

Contains a performance fix for normalization with a large BGP and a distinct above

Ontop 5.2.0

Ontop

The Ontop framework is an open source project available under the terms of the
Apache 2.0 License.

• Current version: 5.2.0
• Release date: 16/08/2024
• Changelog

Downloads

Command line interface of Ontop

• ontop-cli-[version].zip

Platform-specific Ontop Protégé bundles with JRE 11 embedded

• ontop-protege-bundle-linux-[version].tar.gz: Linux bundle (start with run.sh)
• ontop-protege-bundle-macos-[version].zip: macOS bundle (first run: right click Protégé.app and select Open in
  the warning dialog)
• ontop-protege-bundle-windows-[version].zip: Windows bundle (start with run.bat or Protege.exe)

Platform-independent Ontop Protégé plugin and bundle (JRE 11 needs to be installed manually)

• it.unibz.inf.ontop.protege-[version].jar: platform-independent plugin (drop it into Protege’s plugins folder).
• ontop-protege-bundle-platform-independent-[version].zip: platform-independent plugin (start with run.sh, run.command
  or run.bat)

Links

• Official Website: https://ontop-vkg.org
• Download (Github): https://github.com/ontop/ontop/releases
• Download (Sourceforge): http://sourceforge.net/projects/ontop4obda/files/
• Docker Hub: https://hub.docker.com/r/ontop/ontop
• Google Group: https://groups.google.com/forum/#!forum/ontop4obda
• Source Code: https://github.com/ontop/ontop
• Facebook: https://www.facebook.com/obdaontop/
• Twitter: https://twitter.com/ontop4obda
• Issue Tracker: https://github.com/ontop/ontop/issues

Ontop 5.2.0 beta 2

ontop-5.2.0-beta-2

Merge branch 'feature/duckdb-ts-no-tz-serialization' into version5

Ontop 5.2.0 beta 1

ontop-5.2.0-beta-1

Merge branch 'feature/extract-ignore-cast-for-non-default-datatype' i…

Ontop 5.1.2

Ontop

The Ontop framework is an open source project available under the terms of the
Apache 2.0 License.

• Current version: 5.1.2
• Release date: 16/01/2024
• Changelog

Downloads

Command line interface of Ontop

• ontop-cli-[version].zip

Platform-specific Ontop Protégé bundles with JRE 11 embedded

• ontop-protege-bundle-linux-[version].tar.gz: Linux bundle (start with run.sh)
• ontop-protege-bundle-macos-[version].zip: macOS bundle (first run: right click Protégé.app and select Open in
  the warning dialog)
• ontop-protege-bundle-windows-[version].zip: Windows bundle (start with run.bat or Protege.exe)

Platform-independent Ontop Protégé plugin and bundle (JRE 11 needs to be installed manually)

• it.unibz.inf.ontop.protege-[version].jar: platform-independent plugin (drop it into Protege’s plugins folder).
• ontop-protege-bundle-platform-independent-[version].zip: platform-independent plugin (start with run.sh, run.command
  or run.bat)

Links

• Official Website: https://ontop-vkg.org
• Download (Github): https://github.com/ontop/ontop/releases
• Download (Sourceforge): http://sourceforge.net/projects/ontop4obda/files/
• Docker Hub: https://hub.docker.com/r/ontop/ontop
• Google Group: https://groups.google.com/forum/#!forum/ontop4obda
• Source Code: https://github.com/ontop/ontop
• Facebook: https://www.facebook.com/obdaontop/
• Twitter: https://twitter.com/ontop4obda
• Issue Tracker: https://github.com/ontop/ontop/issues