Tech stack

Our toolbox

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Technologies, platforms and products we work with hands-on and that form the foundation of our services. This is not a catalogue of offerings: everything here we have deployed, operated or replaced in client environments. It also shows what we mean by manufacturer independence – proprietary and open-source solutions sit side by side, because the task decides, not the licence.

To see how we work with them, look at our projects.

294 entries in 35 categories

(IT) documentation and administration 9

  • Affine
  • Doxygen
  • Hudu IT Documentation
  • itpilot
  • MkDocs
  • NetBox
  • Process Street
  • Read the Docs
  • SweetProcess

Artificial Intelligence (AI) / agent-based AI assistants / language models (LLM) 4

  • Claude (as well as Claude Code and Claude Cowork)
  • Microsoft Copilot (and Copilot Agent)
  • OpenClaw
  • Paperclip

Automation and workflow modelling 5

  • Activepieces
  • Ansible
  • Microsoft Power Automate
  • n8n
  • Windmill

Backup and recovery 12

  • BorgBackup
  • Duplicati
  • Hornetsecurity 365 Total Backup
  • Hornetsecurity VM Backup
  • OpenText Core Cloud-to-Cloud Backup
  • OpenText Server Backup (formerly Carbonite Server Backup)
  • Proxmox Backup Server
  • Restic
  • Synology Active Backup
  • Synology Hyper Backup
  • Veeam Backup & Replication
  • Veeam Backup for Microsoft Office 365

Business Continuity Management (BCM) and IT Service Continuity Management (ITSCM) 4

  • AWS Elastic Disaster Recovery
  • HPE Zerto
  • Rubrik
  • Veeam Recovery Orchestrator

Cloud and infrastructure 9

  • Amazon Webservices (AWS)
  • Coolify
  • Exoscale
  • Google Cloud Platform (GCP)
  • Hetzner Cloud
  • IONOS Cloud (formerly Profitbricks)
  • Microsoft Azure
  • OpenStack
  • Red Hat OpenShift

Collaboration and productivity 29

  • Atlassian Confluence
  • Atlassian Jira
  • Atlassian Rovo
  • Cal.com
  • Chatwoot
  • DocuSign
  • Form.io
  • Formbricks
  • Google Chat
  • Google Forms
  • Google Sites
  • Google Workspace (formerly Google G Suite)
  • LibreOffice
  • Matrix
  • Mattermost
  • Microsoft 365
  • Microsoft Office
  • Microsoft Outlook
  • Microsoft SharePoint
  • Microsoft Teams
  • Microsoft Visio
  • Nextcloud Hub
  • Nextcloud Talk
  • Notion
  • Rocket.Chat
  • Slack
  • Stackfield
  • Univention Corporate Server (UCS)
  • Wrike

Communications (telephony/PBX) 3

  • NFON
  • Placetel
  • STARFACE

Containers and virtualisation 12

  • Docker
  • Kubernetes
  • KVM
  • LXC
  • Microsoft Hyper-V
  • Omnissa Horizon (formerly VMware Horizon)
  • Proxmox VE
  • VMware vSphere
  • XCP-ng
  • Xen
  • Xen Orchestra
  • XenServer

Data Governance / Data Loss Prevention 2

  • Axonius
  • Microsoft Purview

Data storage and synchronisation 11

  • Ceph
  • DropBox
  • Fujitsu ETERNUS
  • MinIO
  • Nextcloud Files
  • ownCloud
  • PowerFolder
  • Pydio
  • Seafile
  • Syncthing
  • TrueNAS

Databases (including low-code and no-code) 10

  • Airtable
  • Firebird
  • Grist
  • MariaDB / MySQL
  • Microsoft Access
  • Microsoft SQL Server
  • MongoDB
  • PostgreSQL
  • SeaTable
  • SQLite

Document Management System (DMS) 3

  • ecoDMS
  • Paperless / Paperless-ngx
  • PaperOffice

E-commerce 8

  • JTL-eazyauction
  • JTL-Shop
  • JTL-WMS
  • osCommerce
  • PlentyONE (formerly plentymarkets)
  • Shopify
  • Shopware
  • xt:Commerce

E-mail 14

  • Dovecot
  • Exim
  • Hornetsecurity Advanced Threat Protection
  • Hornetsecurity Spam and Malware Protection
  • iRedMail
  • Mailcow
  • MailStore
  • Mailu
  • Microsoft Exchange Online (and Microsoft Exchange Server)
  • Modoboa
  • NoSpamProxy
  • Postfix
  • Proxmox Mail Gateway
  • Stalwart Mail Server

Endpoint Detection and Response 2

  • CrowdStrike Falcon
  • SentinelOne

Enterprise Resource Planning (ERP) 11

  • easybill
  • ERPNext
  • FastBill
  • JTL-Wawi
  • Microsoft Dynamics 365
  • Microsoft Dynamics AX (formerly Axapta)
  • Odoo
  • OpenXE
  • orgaMAX
  • WISO MeinBüro
  • Xentral

Human Resources (HR) 3

  • askDANTE
  • OpenCATS
  • Personio

Identity and Access Management (IAM) 7

  • Authentik
  • KeyCloak
  • LoginTC
  • Microsoft Active Directory Domain Services
  • Microsoft Active Directory Federation Services
  • Microsoft Entra ID
  • Univention Nubus

Information Protection 2

  • Hornetsecurity 365 Permission Manager
  • Microsoft Azure Information Protection

Mobile Device Management (MDM) and Enterprise Mobile Management (EMM) 7

  • Android Enterprise
  • Apple Business Manager
  • Cortado MDM
  • ManageEngine Endpoint Central
  • Microsoft Intune
  • Miradore MDM
  • Relution

Monitoring and logging 13

  • Checkmk
  • Grafana
  • Graylog
  • Logstash
  • Loki
  • OpenObserve
  • Prometheus
  • runZero (formerly Rumble)
  • SolarWinds Observability
  • SolarWinds SQL Sentry
  • Splunk
  • Veeam ONE
  • Zabbix

Network protocols 14

  • BGP
  • CARP / VRRP
  • CDP
  • HTTP / HTTP/2 / HTTP/3
  • ICMP
  • IPsec
  • IPv4
  • IPv6
  • OSPF
  • QUIC
  • SCTP
  • SIP
  • TCP
  • UDP

Network technologies 9

  • 3G / UMTS
  • 4G / LTE
  • 5G
  • GPRS
  • IoT
  • LoRaWAN
  • QoS
  • SDN
  • Wi-Fi

Networking and security 25

  • Astaro Security Gateway
  • Cisco (ASA, Catalyst Switches)
  • CrowdSec
  • DynFi Manager
  • GNS3
  • HAProxy
  • LANCOM Systems (Routers, Switches, Wireless LAN)
  • MikroTik (IoT /Routers / Switches / Wireless LAN)
  • NetBird
  • OPNsense
  • pfSense
  • Snort
  • Squid
  • SquidGuard
  • Suricata
  • Technitium
  • Teltonika Networks
  • TP-Link (Omada / Router / Switches / Wireless LAN)
  • Ubiquiti / UniFi
  • Zenarmor Next Generation Firewall
  • Zenarmor Secure Web Gateway
  • Zenarmor SSE
  • ZeroTier
  • ZT-VPN
  • ZTNA

Operating systems 6

  • Apple iOS / iPadOS / macOS
  • FreeBSD
  • Linux (Debian, Red Hat and their derivatives)
  • Microsoft Windows / Microsoft Windows Server
  • OpenBSD
  • Synology DiskStation Manager (DSM)

Other tools 4

  • Gitea
  • GitHub
  • GitLab
  • PhotoPrism

Password and credential management 3

  • Bitwarden
  • KeePass / KeePassXC
  • Passbolt

Project management 7

  • Asana
  • Atlassian Trello
  • Leantime
  • Microsoft Project
  • OpenProject
  • Projektron BCS
  • Wekan

Remote maintenance and remote access 6

  • AnyDesk
  • OpenRPort / RPort
  • RustDesk
  • TeamViewer
  • VNC (RealVNC, TigerVNC, TightVNC, UltraVNC)
  • XPipe

Security and cryptography 17

  • ClamAV
  • GNU Privacy Guard
  • GnuTLS
  • Greenbone
  • Hornetsecurity 365 Total Protection
  • Hornetsecurity Security Awareness Service
  • LibreSSL
  • Microsoft Active Directory Certificate Services
  • OAuth
  • OpenID Connect
  • OpenSSL
  • PGP / OpenPGP
  • RADIUS
  • SAML
  • SSH
  • SSL
  • TLS

Security Information and Event Management (SIEM) 2

  • ManageEngine Log360
  • Wazuh

Ticketing, ITSM and CMDB 11

  • Atlassian Jira Service Management
  • BMC Helix ITSM (formerly Remedy Ticketing System)
  • GLPI
  • HaloITSM / HaloPSA
  • iTop
  • NinjaOne (formerly NinjaRMM)
  • osTicket
  • OTRS
  • SolarWinds Service Desk
  • TANSS
  • Zammad

Web server 3

  • Apache HTTP Server
  • Microsoft Internet Information Services
  • nginx

Web technologies 7

  • Java
  • Joomla
  • Node.js
  • PHP
  • Python
  • TYPO3
  • WordPress