It is a soundcard based program that lets you run PSK31,
the digital mode designed by Peter, G3PLX.
From The README:
Xblackjack is a MOTIF/OLIT based tool constructed to get you ready for the
casino. It was inspired by a book called "Beat the Dealer" by Edward O.
Thorp, Ph.D. of UCLA. A number of important statistics are maintained for
display, and used by the program to implement Thorp's "Complete Point System"
(high-low system).
Beginners can learn a basic strategy which doesn't require counting. The
best strategy employs a simple card counting technique which can be used to
distinguish favorable situations. Avid players can learn to compute Thorp's
high-low index, which takes the number of unseen cards into account.
The index is used by the program to suggest a bet, indicate when you should
buy insurance, and whether you should stand or hit, etc. You can test the
strategy using a slider to control "autoplay mode". Pressing the message
button below the playing area provides hints; the current count, index
and strategy table are revealed.
Xjewel is a dropping block game akin to tetris.
It is played by controlling the motion of blocks which continue to fall from
the top of the screen. One can move them left and right, as well as
rotate the jewel segments. The object is to get the most points before
the grim reaper ends the fun.
Death happens when the screen is no longer capable of holding any more
blocks. To make high scores more interesting, you are given but three
attempts to get points -- use them wisely.
As the game progresses, and more jewels are removed, the speed of the game
will increase. This is measured in seconds of delay between steps of
block motion.
Xminesweep like Windoze minesweeper game
VP is an SDL based image viewer.
xoris grabs the RGB color value of any pixel on the screen and dumps the
color's name to stdout. The output can be printed as:
1. hex (#b0958e);
2. triple of decimal RGB values (229 229 229);
3. abstract name (gray90).
xoris has only been tested on displays with a bit depth of 24 bpp.
The xsvg program is a viewer for SVG files
xine is a free multimedia player. It plays back CDs, DVDs, and VCDs.
It also decodes multimedia files like AVI, MOV, WMV, and MP3 from
local disk drives, and displays multimedia streamed over the Internet.
It interprets many of the most common multimedia formats available.
With XPN you can read/write articles on the Usenet with a good MIME
support (better than some well known newsreaders).
XPN can operate with all the most diffuse charset starting from US-ASCII
to UTF-8. When you edit an article XPN automatically chooses the best
charset, however is always possible to override this choice.
There also other useful features like scoring, filtered views,
random tag-lines, external editor support, one-key navigation,
ROT13, spoiler char.