XWorld displays a pretty picture of our earth as it would look if
viewed from the direction of the sun. The window is regularly updated.
You can use xworld in lieu of a clock.
JOSM is the "Java OpenStreetMap Editor". It is a feature-rich editor for the
experienced OSM mapper. It requires some configuration efforts. But if you
intend to become a great OSM mapper, it's worth the time you need to get
used to it.
The tecla library provides UNIX and LINUX programs with interactive
command line editing facilities, similar to those of the Unix tcsh
shell. In addition to simple command-line editing, it supports recall
of previously entered command lines, TAB completion of file names or
other tokens, and in-line wild-card expansion of file names. The
internal functions which perform file-name completion and wild-card
expansion are also available externally for optional use by programs,
along with a module for tab-completion and lookup of file names in a
list of directories.
Note that special care has been taken to allow the use of this library
in threaded programs. The option to enable this is discussed in the
Makefile, and specific discussions of thread safety are presented in
the included man pages.
PGPLOT is a Fortran subroutine package for drawing graphs on a variety
of display devices. For more details, see the manual ``PGPLOT Graphics
Subroutine Library'', available from T. J. Pearson.
The CPGPLOT library adds an intermediate level of wrapper functions
between C programs and the PGPLOT library. These functions hide the
system dependencies of calling PGPLOT behind a system independent
interface.
Documentation and demo programs are included.
Astrolog is a many featured and
customizable astrology chart calculation
program for DOS, Windows, Mac, and Unix,
used in 30+ countries on six continents.
It is 100% freeware and requires no
registration fee. :) The complete source
code is available. Astrolog features:
wheels, aspects, midpoints, relationship
charts, transits, progressions, some
interpretations, astro-graphy, local
horizon, constellations, planet orbits,
dispositors, various influence charts,
biorhythms, different zodiacs, central
planets, 14 house systems, 8400 year
ephemeris, asteroids, Uranians, fixed
stars, Arabic parts, script files and
macros, interactive PC & MS/X11 Windows
graphics, smooth animation of charts,
graphic files in PostScript, Windows
metafile, and bitmap formats, and more!