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Tech-Stack

Our toolbox

Technologies, platforms, and products we work with hands-on and that form the foundation of our services.

Automation and workflow modelling


  • Activepieces
  • Ansible
  • Microsoft Power Automate
  • n8n
  • Windmill
Business Continuity Management (BCM) and IT Service Continuity Management (ITSCM)


  • AWS Elastic Disaster Recovery
  • HPE Zerto
  • Rubrik
  • Veeam Recovery Orchestrator
Data Governance / Data Loss Prevention


Document Management System (DMS)


E-mail


  • 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


  • CrowdStrike Falcon
  • SentinelOne
Enterprise Resouce Planning (ERP)


  • easybill
  • ERPNext
  • FastBill
  • JTL-Wawi
  • Microsoft Dynamics 365
  • Microsoft Dynamics AX (before: Axapta)
  • Odoo
  • OpenXE
  • orgaMAX
  • WISO MeinBüro
  • Xentral
Remote maintenance and remote access


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


Identity and Access Management (IAM)


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


  • Hornetsecurity 365 Permission Manager
  • Microsoft Azure Information Protection
Artificial Intelligence (AI) / agent-based AI assistants / language models (LLM)


Communications (telephony/PBX)


  • NFON
  • Placetel
  • STARFACE
Mobile Device Management (MDM) and Enterprise Mobile Management (EMM)


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


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


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


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


  • 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
Password and credential management


  • Bitwarden
  • KeePass / KeePassXC
  • Passbolt
Human Resources (HR)


  • askDANTE
  • OpenCATS
  • Personio
Project management


  • Asana
  • Atlassian Trello
  • Microsoft Project
  • Leantime
  • OpenProject
  • Projektron BCS
  • Wekan
Security Information and Event Management (SIEM)


Security and cryptography


  • 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
Ticketing, ITSM and CMDB


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


see Enterprise Resource Planning (ERP)

Web server


  • Apache HTTP Server
  • Microsoft Internet Information Services
  • nginx
Web technologies


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


  • Gitea
  • GitHub
  • GitLab
  • PhotoPrism