This is a DirectX 9 Graphics Client/Engine for free Orbiter SpaceFlight Simulator. It provides basically the same features as the Orbiter built-in engine, but using DirectX 9 interface instead. That will improve performance and framerate expecially on Windows
7 and 8 Systems.
D3D9Client support thread is located in
Orbiter Forum. You may find some answers to your questions from there by searching the thread.
- Versions starting with an 'R' followed by a number (e.g. 'R14') are for
Orbiter 2010-P1 (v100830).
The ZIP file will have a name like 'D3D9ClientR14-for2010-P1.zip'
- Versions starting with 'Beta' followed by a number (e.g. 'Beta 8') are for
Orbiter Beta (currently v140602).
Additionally the Version string is followed by the revision of Orbiter Beta (e.g. 'Beta 8 for Orbiter 2014 (Rev 8)')
The ZIP file will have a name like 'D3D9ClientBeta8-forRev8.zip'
Both types (including older, newer and the current version) of D3D9Client can be downloaded via the 'DOWNLOADS' tab above.
 D3D9Client improves framerates on XP Systems as well!
 Revision 8 of the Subversion repository 'svn://orbithangar.com/orbiter/' .
Wich coresponds to v140602.