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Let's talk NonStop security.
Questions about a product, a trial license, or your specific setup? Send us a message.
Support & service
However you prefer to reach us — we answer in German and English.
Phone support
Mon–Fri 8am–6pm (CET).
+49 (0) 2363 731004Email & ticket
Reply usually within one business day.
info@greenhouse.deFreeware tools
76 free NSK tools for administration and SAFEGUARD security.
Browse freeware →Frequently asked questions
Short answers to what customers ask most.
Which NonStop versions are supported?
All current L- and J-Series systems, plus older H-Series on request.
Do your products require changes to our applications?
No. GreenHouse products install on the system level (Guardian/OSS) and work transparently — your existing applications stay untouched.
How does licensing work?
Per system, including maintenance and updates. Volume tiers are available.
Is support available?
Yes — our entire team in Datteln supports you in German and English.
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