FlightDisplay 1.9.11.0 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The actual developer of the free program is Soaring Pilot Software. The most popular version of the tool is 1.9. The program is included in Education Tools.
From the developer:
'Flight Display' allows you to display data from a GPS logger on images of sectional maps (or other maps with longitude and latitude line references), to plan and display soaring tasks, to evaluate data from your GPS recorder competition style against a predefined task, and to perform detailed analysis of your flight including detailed plots of thermalling activities, or flight track sections.
You may want to check out more software, such as Avantage BPM Foundation, Adding Machine or gitoolbox, which might be related to FlightDisplay.