OPSI
Mainz, Germany
What it is
OPSI is an open-source client management system for automating software distribution, operating-system installation, inventory, patch management, and configuration. It can deploy Windows updates, MSI packages, setup programs, and system packages without interactive installation steps. It also supports automated Windows client and server installation and common Linux distributions, including unattended and image-based setups. Regular inventory collection covers hardware and software, including hardware details when a computer has no operating system. Administrators can manage multiple sites centrally, with separate depot servers, configurations, and software packages at each location. Directory Connector supports Active Directory, Samba 4, and OpenLDAP; Single Sign-On supports Microsoft Entra ID and Keycloak through SAML 2.0. OPSI-WebGUI runs in a modern browser without a client-side installation. Community is free with unlimited devices and one worker process. Basic is free for up to 30 devices and one setup per user. Professional costs €499 a year and requires at least 100 devices; Enterprise costs €899 a year with the same minimum. Enterprise Cloud costs €1,199 a year, starting at 100 devices.
For and against
For
- Automates software deployment and operating-system installation.
- Collects hardware inventory even without an installed operating system.
- Centralizes management across multiple sites.
- WebGUI needs no client-side installation.
Against
- Basic is limited to 30 devices per user.
- Basic must be renewed annually.
- Professional and Enterprise require at least 100 devices.
- Basic excludes support for non-free modules.
The verdict
OPSI covers deployment, inventory, patching, and configuration in one client management system. Compare the device limits and extension needs with the chosen license, especially for paid plans.
Who it suits
OPSI may suit IT teams managing software, operating systems, and inventory across Windows and Linux environments. Its multi-site administration and directory integrations may also be useful for organizations with distributed setups.
Plans and prices
Basic
Up to 30 devices · selected extensions · 1 worker process
Read 14 Oct 2026 · opsi.org
Community
Unlimited devices · core features · 1 worker process
Read 14 Oct 2026 · opsi.org
Professional
Minimum 100 devices · selected extensions · up to 2 worker processes
Read 14 Oct 2026 · opsi.org
Enterprise
Minimum 100 devices · full extension set · unlimited worker processes
Read 14 Oct 2026 · opsi.org
Enterprise Cloud
Managed hosting · centralized multi-location management · unlimited worker processes
Read 14 Oct 2026 · opsi.org
On the record
- API
- Administrators can inspect endpoints at the opsiconfd /docs address; server data is changed through JSON-RPC and the WebGUI add-on provides a REST API.docs.opsi.org · read 14 Oct 2026
- Basic license conditions
- The Basic license is limited to one OPSI setup with a maximum of 30 clients per user, must be renewed for each year, and does not include support for non-free modules.opsi.org · read 2 Oct 2026
- Certificate security
- Custom CA and Let’s Encrypt extensions issue, verify, store and renew OPSI server certificates automatically.opsi.org · read 14 Oct 2026
- CLI
- opsi-cli is a customizable command-line client for backend RPC operations and supports JSON, MessagePack, table and CSV output modes.opsi.org · read 14 Oct 2026
- Closed extensions
- Wikipedia reports that some co-funded modules, including License Management, were not yet released as open source.en.wikipedia.org · read 14 Oct 2026
- Company founding
- uib says the Umwelt-Informatikbüro was founded in 1995 and later incorporated as UIB GmbH.uib.de · read 14 Oct 2026
- Company headquarters
- uib GmbH identifies Mainz, Germany as its base.uib.de · read 14 Oct 2026
- Company legal identity
- The maker is uib GmbH, registered at Bonifaziusplatz 1B, 55118 Mainz, Germany, under commercial register HRB 6942.opsi.org · read 14 Oct 2026
- Configuration management
- Administrators can centrally configure operating systems, drivers and applications and run administrative tasks.opsi.org · read 14 Oct 2026
- Developer ecosystem
- The official GitHub organization publishes repositories for opsiconfd, opsi-clientd, opsi-cli, opsi-utils, opsi-script, Docker and documentation.github.com · read 14 Oct 2026
- Directory integration
- The Directory Connector extension supports Active Directory, Samba 4 and OpenLDAP.opsi.org · read 14 Oct 2026
- Directory integrations
- The Directory Connector extension supports Active Directory, Samba 4, and OpenLDAP.opsi.org · read 2 Oct 2026
- Documentation depth
- The English 4.3 manual covers supported systems, quick start, server, clients, interfaces, products, modules, opsi-script, troubleshooting and contribution.docs.opsi.org · read 14 Oct 2026
- Identity integration
- The Single Sign-On extension supports Microsoft Entra ID and Keycloak through SAML 2.0.opsi.org · read 2 Oct 2026
- Independent feature summary
- AlternativeTo lists automated software distribution and patch management, unattended or image-based OS installation, hardware/software inventory, multiple locations and an open API.alternativeto.net · read 14 Oct 2026
- Independent listing
- AlternativeTo lists OPSI as open source and free, developed by uib GmbH, with 20 alternatives and no comments or reviews on its product page.alternativeto.net · read 14 Oct 2026
- Independent platform listing
- AlternativeTo lists Linux, Flathub and self-hosted as OPSI platforms.alternativeto.net · read 14 Oct 2026
- Independent praise: automation
- SaaSHub highlights automated software deployment as a way to reduce IT-management effort.saashub.com · read 14 Oct 2026
