Siedl Networks

What Siedl Networks does

Siedl Networks GmbH is an Austrian IT system house headquartered in Krems an der Donau, founded in 2002 by Robert Siedl and operating as a privately held GmbH with no external investors. The firm specialises in open-source enterprise IT infrastructure and collaboration for the German-speaking EU market (primarily Austria, with select customers in Germany), serving healthcare, education, government, NGOs, manufacturing, logistics, telecommunications, and mid-market enterprises. Its core platform stack is anchored on Univention Corporate Server (UCS/Nubus) for identity and access management, Zimbra for email and groupware, and Proxmox VE for enterprise virtualization, complemented by SEP sesam for backup, Checkmk for monitoring, Nextcloud/ONLYOFFICE for collaboration, OPSI for software distribution, and OPNsense/Ikarus/privacyIDEA for security. A self-developed Siedl-Zimbra-LDAP Connector (sinbra) and custom Checkmk extensions represent its modest proprietary IP layer.

The company monetises through a mix of recurring managed services (minimum 12-month contracts for Managed Private Cloud Platform, Managed Team Collaboration, Managed Monitoring, Managed E-Mail Security, Managed Proxmox Backup Server, Managed lywand Security Audit, and Managed Private Cloud Server), professional services billed at hourly rates (adjusted ~2.75% in May 2026), hardware and software resale (DELL, Thomas-Krenn, LANCOM, MikroTik), and a new standalone IT Support Contract product with guaranteed response times. Go-to-market is consultative enterprise field sales executed by named account managers, supplemented by a channel partnership with A1 Telekom Austria (A1 IT in a Box SMB bundle) and ecosystem partner marketing. The firm holds multiple Gold partner statuses (Zimbra, Proxmox, SEP, ONLYOFFICE, DELL), the Austrian Cyber Trust Label, and 5th place in the 2023 Austria's Leading Companies small business category. As of 2026 it employs ~18 people, hosts the annual SiCom conference on digital sovereignty, and reports no M&A, external funding, or subsidiaries.

Name

Siedl Networks

Legal name

Siedl Networks GmbH

Website

https://siedl.net

Company type

Private

Founded year

2002

Operating status

Operating

Headcount range

11–50 employees

Short description

Siedl Networks is an Austrian IT system house delivering open-source enterprise IT infrastructure and managed services — identity management, email/groupware, virtualization, backup, and security — to DACH customers in healthcare, education, government, manufacturing, and NGOs.

Ownership category

akta.pro rank

Product category

Managed IT Services & Open-Source IT Consulting

NAICS

Computer Systems Design Services (541512), Computer Facilities Management Services (541513)

SIC

Services-Computer Integrated Systems Design (7373), Communications Services, Nec (4899)

akta.pro primary industry

Network Implementation & Integration Services (BPAEAEAB)

akta.pro secondary industries

Network Monitoring, Assurance & Managed NOC Services (SLA Ops) (HDAIAGAJ), Fault & Performance Monitoring (SNMP/Telemetry/APM for Networks) (HDAFAMAA)

Keywords

• Open source IT consulting
• Enterprise virtualization services
• Managed IT infrastructure
• Identity access management
• Email collaboration platforms

Headquarters

HQ city

Krems An Der Donau

HQ country

Austria

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Supply Chain

Revenue model

1. Managed Services: Recurring managed service contracts including Managed Monitoring, Managed Private Cloud Platform, Managed Team Collaboration, Managed Private Cloud Server, Managed E-Mail Security, Managed Proxmox Backup Server, and Managed lywand Security Audit. Contracts minimum 12 months with semi-annual cancellation option.
2. Consulting & Professional Services: IT consulting, project implementation, outsourcing, and operational management billed at hourly rates. Hourly rates for technician and consulting services, with rates adjusted periodically (e.g., ~2.75% increase May 2026, 1.3-3.5% increase January 2025, 8.9% increase January 2024).
3. Hardware & Software Sales: Sale and delivery of hardware (DELL, Thomas-Krenn, LANCOM, MikroTik) and software licenses. Hardware sales with retention of ownership until full payment. Pricing excludes VAT, transport, insurance, and installation costs.
4. Training & Workshops: In-house and on-site workshops and training sessions conducted since 2010 for customers and IT professionals on open source solutions.
5. Support & Maintenance Contracts: Support contracts with guaranteed response times and on-call availability, including IT-SLA agreements covering service availability and performance. Billed on a recurring basis with minimum 12-month terms.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels7 records

Core offering

Siedl Networks is an IT system house providing consulting, implementation, and managed services for open-source enterprise IT infrastructure and collaboration platforms. Core offerings include managed services for identity management (Univention Corporate Server/Nubus), email and groupware (Zimbra), enterprise virtualization (Proxmox VE), backup (SEP sesam), monitoring (Checkmk), and security (Ikarus, OPNsense, privacyIDEA), delivered on-premises, in private cloud, or in Austrian data centers. The company also resells hardware (DELL, Thomas-Krenn, LANCOM, MikroTik) and conducts training workshops.

Product overview

Siedl Networks is an IT system house offering a comprehensive portfolio of open-source enterprise solutions for digital-sovereign IT infrastructure and collaboration. The core platform consists of Univention Corporate Server (UCS) for identity and access management, Zimbra for email and groupware collaboration, and Proxmox VE for enterprise virtualization. These are complemented by specialized add-on modules including Rocket.Chat, OpenTalk, Jitsi Meet, Nextcloud, and ONLYOFFICE for team collaboration; Ikarus Security, privacyIDEA, and OPNsense for security; SEP sesam, Proxmox Backup Server, OPSI, Checkmk, and Benno MailArchiv for operations. The company delivers these products both as standalone solutions and through managed services, including Managed Private Cloud Platform, Managed Team Collaboration, Managed Private Cloud Server, Managed E-Mail Security, Managed lywand Security Audit, Managed Proxmox Backup Server, and Managed Monitoring. Hardware offerings include DELL, Thomas-Krenn, LANCOM Systems, and MikroTik equipment.

Differentiator

Problem solved

Functional benefit

Products and services

• Managed Monitoring
• Managed Private Cloud Platform
• Managed Team Collaboration
• Managed Private Cloud Server
• Managed E-Mail Security
• Managed lywand Security Audit
• Managed Proxmox Backup Server
• IT Consulting & Professional Services
• Training & Workshops
• IT Support & Maintenance Contracts

Quantifiable outcome

• Digital sovereignty and GDPR compliance for organizations with 3,000+ users across 90+ locations (e.g., Diakonie Eine Welt)
• +2 more outcomes

Named customers18 records

Segments6 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration14 records

Feature4 records

Partnerships

17 partnerships are on record, tiered core, major and minor.

• Univention GmbHcoreTechnology or IntegrationCertified Solution Partner providing Univention Corporate Server (UCS/Nubus) for Identity & Access Management. UCS serves as central identity provider integrating Microsoft 365, Google Workspace, and 40+ internal/external services via SSO. Deployed at major customers including Diakonie Eine Welt (3,000+ users, 90+ locations). Siedl Networks participates in Univention Summit annually.
• Zimbra (Synacor, Inc.)coreTechnology or IntegrationGold Partner — highest partner level, first Zimbra Gold Partner in Austria (as of 2025). Provides Zimbra email and collaboration platform with Outlook support, WebUI, and mobile clients. Siedl developed the proprietary Siedl-Zimbra-LDAP Connector (sinbra) for directory integration. Multiple successful migrations from Microsoft Exchange to Zimbra.
• Proxmox Server Solutions GmbHcoreTechnology or IntegrationGold Partner with deep expertise in Proxmox VE ecosystem including cluster architecture, Ceph storage, and migration from VMware, Hyper-V, and KVM environments. Provides Proxmox VE, Proxmox Backup Server, and Proxmox Datacenter Manager. Successfully delivered migration projects from VMware to Proxmox for WIFI Tirol and other institutions.
• SEP GmbHcoreTechnology or IntegrationGold Partner for SEP sesam backup and disaster recovery solutions. SEP sesam Artemis provides intelligent backup management for hybrid and cloud environments. SEP awarded 'Leader' in techconsult PUR-S 2025 Award for sixth time. Siedl provides SEP sesam implementation, migration, and managed backup services.
• Nextcloud GmbHcoreTechnology or IntegrationSilver Partner for Nextcloud local filesharing and collaboration solution. Provides secure, GDPR-compliant file sharing with Web Office integration for collaborative document editing. Part of the digital sovereignty ecosystem.
• ONLYOFFICEcoreTechnology or IntegrationGold Partner for ONLYOFFICE online office document editing. Enables collaborative document creation and editing integrated with Nextcloud and other platforms. Partner since 2023, celebrating 15th anniversary of ONLYOFFICE in 2025.
• Ikarus Security Software GmbHcoreTechnology or IntegrationIkarus Partner Cloud Service providing endpoint security and email protection with AI services. Included in managed email security services. Also partnered for HarfangLab Guard EDR solution featuring Ikarus integration for European endpoint detection and response.
• OPNsensemajorTechnology or IntegrationOPNsense Partner providing firewall solutions for network security. Implemented redundant OPNsense cluster across international locations for Koller International Group, replacing end-of-support hardware firewall solution.
• CheckmkmajorTechnology or IntegrationSilver Support Partner for Checkmk IT monitoring. Developed proprietary Checkmk monitoring extensions for Zimbra services. Provides managed monitoring services with proactive alerting for hybrid IT infrastructure.
• OpenTalkmajorTechnology or IntegrationOpenTalk Partner providing DSGVO-compliant video conferencing solution developed by Heinlein Gruppe (30 years of secure communication expertise). Siedl provides managed team collaboration services including OpenTalk implementation and support.
• Rocket.ChatmajorTechnology or IntegrationRocket.Chat Partner providing chat platform under customer control. Part of managed team collaboration offerings for secure internal communication.
• OPSI (UIB GmbH)majorTechnology or IntegrationOpsi Partner for software distribution and patch management. Provides automated PC installation, configuration, and inventory management. Deployed at Dr. Richard Linien for ~300 Windows computers across multiple locations.
• Thomas-Krenn.AGmajorTechnology or IntegrationThomas Krenn Partner for server and storage systems. Hardware supplier with excellent Linux support. Servers and storage from Thomas-Krenn used in conjunction with Proxmox VE virtualization deployments.
• DELL TechnologiescoreTechnology or IntegrationDELL Technologies Gold Partner providing PowerEdge servers, PowerVault storage, and client devices. Dell 0% financing programs available for servers, storages, and business laptops. Deployed at SFU (Sigmund Freud PrivatUniversität) and other enterprise customers.
• LANCOM SystemsmajorTechnology or IntegrationLANCOM Systems Partner (European manufacturer from Germany) for network and WLAN solutions. Provides secure, reliable, and future-proof networking hardware. Multiple employees certified as LANCOM Certified Specialists.
• A1 Telekom Austria GroupcoreChannel Partner/ Reseller/ DistributorA1 Partner for bundling Siedl Networks' open source IT solutions into 'A1 IT in a Box' SMB package. A1 resells the solution to small and medium businesses with migration, implementation, and operations provided by Siedl Networks. Partnership enables SMB market reach.
• myDC Cloud Services GmbHminorChannel Partner/ Reseller/ DistributormyDC Cloud Services (myDataCenter.at) — Goldpartner relationship. Co-founded by Johannes Zöhrer, Sales & Account Manager at Siedl Networks. Provides cloud services complementary to Siedl's managed services offering.

Scale indicators5 records

Recent moves14 records

Expansion highlights6 records

Broad incumbents

• IONOS SE: Large German cloud/hosting and infrastructure provider serving SMBs and mid-market. Overlaps with Siedl on the A1-style SMB channel and on sovereignty-friendly EU hosting, but operates at hyperscaler-adjacent scale rather than as a systems integrator.
• SVA System Vertrieb Alexander GmbH: German IT system integrator with data center, virtualization, and managed services capabilities. Overlaps with Siedl on Proxmox-class virtualization, enterprise IT infrastructure delivery, and DACH mid-market/enterprise customers, but at much larger scale.
• CANCOM SE: Major DACH managed services provider and IT system house offering cloud, managed services, and enterprise IT. Comparable as a managed-services-led competitor in DACH but operates at significantly larger scale with a multi-vendor, multi-cloud portfolio.
• Bechtle AG: Germany's largest IT system house with broad portfolio across hardware, software, services, and open source. Comparable as a DACH IT-systemhaus serving mid-market and enterprise, though at materially larger scale and with a much wider vendor and service mix.

Emerging players

• Hetzner Online GmbH: German cloud and hosting provider with a strong Linux/open-source DNA and DACH data center footprint. Adjacent rather than direct - competes more on infrastructure/hosting than managed services, but overlaps on Linux-first positioning and Austrian/German sovereignty narrative.

Regional players

• NETHINKS GmbH: Austrian IT services company delivering managed services, IT security, and cloud solutions to mid-market and enterprise in Austria. Comparable regional Austrian IT services peer operating in the same geography and overlapping in managed-services positioning.

Others

• Open-Xchange GmbH: German vendor behind the OX App Suite email/collaboration platform, a direct adjacent technology to Zimbra and a key underlying component for many DACH open-source email deployments (including partners like Heinlein). Relevant ecosystem participant rather than a direct competitor.

Direct peers

• Heinlein Gruppe (Heinlein Hosting/Heinlein Support): Berlin-based IT firm specializing in Linux, open-source email (Open-Xchange), and managed hosting for the DACH market. Closest direct peer to Siedl in terms of open-source philosophy, DACH focus, email/collaboration managed services, and consulting-led delivery.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/siedlnetworks
• Xx.com/siedlnetworks
• LinkedInlinkedin.com/company/siedl-networks-gmbh

Compliance8 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Siedl Networks