SDFE GmbH, headquartered in Hürtgenwald/Germany and its calendaring solution TimeFleX for any enterprise size has been found by our CEO Mr. René Anstötz, who still owns and develops our business activities for more than 10 years now.

It all started when René was still head of IT for a major national company.

With only a few demands made by some bank clients to delegate and coordinate appointments within their groups he raised the idea of developing TimeFleX as calendaring and scheduling solution.

Interest got more and more and so he decided to start SDFE GmbH which now proudly serves solutions for more than 750,000 users worldwide.

Our year by year growth allows us to grow organically with a new developer on board soon, which will make it a total of 6 employees looking for excellence.

Not just IBM, but also the Microsoft Exchange platform is our home turf.

Our main approach is to flex up people's time by giving them the right tools.

With TimeFleX users can add benefits -look out for following extensions:

  • MeetingFinder
  • TimeFleX mobile (works on nearly any platform)
  • Service + rooms+ catering

Our activities in North America and Overseas are done through Wilton Rooks who is with our company since 2015 now. Based near Atlanta, GA TimeFleX Inc. is looking at solving your problems every day.

In our portfolio, we serve clients from national banks up to insurances, federal courts as well as small and big companies in need to have a better group calendar.

We believe in what we do and will never stop to be better every day.

Should you need any help there is always someone to help you within our team.


René Anstötz



Andreas Kuisl
Global Sales Director



Wilton Rooks
Sales Manager NA/ Overseas