To view an e-transcript, lawyers had to use the E-Transcript Viewer, which RealLegal wisely gave away for free. RealLegal released an older version of RealLegal E-Transcript Viewer for Mac, but the software is only compatible with Mac OS Classic, the predecessor to Mac OS X. Both the West and RealLegal brands are used to advertise and sell similar software programs. NOTE: RealLegal, the developers of the PTZ format, were acquired by Thomson West.