Airbus uses Simcenter Testlab to streamline and improve its flutter analysis process. Their flutter testing is divided into three parts:

 - Real-time: Live data is collected during the flight to check safety
   and continue the flight envelope
 - Near real-time: Rapid modal estimation is used to determine the
   flight's overall safety and the flutter test program
 - Offline: Recorded flight data is analyzed in detail and a final report is
   produced

Simcenter Testlab Flutter Analysis is a Siemens Digital Industries product that is part of the Testlab system. There is [a case study on the Siemens web site][1] for the product covering how Airbus used it on the A380 program.

(Full disclosure: I used to work for Siemens and I haven't received a dime from them in 42 years.)


  [1]: https://resources.sw.siemens.com/en-US/case-study-airbus