Vttest is an application which is used to demonstrate features of VT100

VT100

The VT100 is a video terminal that was made by Digital Equipment Corporation . Its detailed attributes became the de facto standard for terminal emulators.-History:...

 and related terminals, or emulations thereof, such as xterm

Xterm

In computing, xterm is the standard terminal emulator for the X Window System. A user can have many different invocations of xterm running at once on the same display, each of which provides independent input/output for the process running in it .xterm originated prior to the X Window System...

. The program was originally written in 1986 by Per Lindberg. It has been maintained and extended since 1996 by Thomas Dickey, to test and demonstrate features of xterm.

The newer version has always been distributed as a separate program; older versions have been bundled with other software, e.g., terminal emulators such as Rxvt

Rxvt

rxvt is a terminal emulator for the X Window System , originally written by Rob Nation and later extensively modified by Mark Olesen, who took over maintenance for several years...

, Konsole

Konsole

Konsole is a free terminal emulator which is part of KDE Software Compilation. Konsole was originally written by Lars Doelle.The KDE applications Konqueror, Krusader, Kate, Konversation, Dolphin and KDevelop use Konsole to provide embedded terminal functionality.- Features :* Tabbed terminals...

, and the FreeBSD PCVT.

Perhaps prompted by the "scoresheet" presented by the developers of Kermit

Kermit (protocol)

Kermit is a computer file transfer/management protocol and a set of communications software tools primarily used in the early years of personal computing in the 1980s; it provides a consistent approach to file transfer, terminal emulation, script programming, and character set conversion across...

, some other developers of terminal emulator

Terminal emulator

A terminal emulator, terminal application, term, or tty for short, is a program that emulates a video terminal within some other display architecture....

s have asserted that their product achieves a given rating on the "VTTEST Score Card".
However, no independent verification

Verification

The word verification may refer to:* Verification and validation, in engineering or quality management systems, it is the act of reviewing, inspecting or testing, in order to establish and document that a product, service or system meets regulatory or technical standards.* Verification , in the...

of any of those claims exists.