These are test programs for the SDL library:
checkkeys Watch the key events to check the keyboard
graywin Display a gray gradient and center mouse on spacebar
loopwave Audio test -- loop playing a WAV file
testalpha Display an alpha faded icon -- paint with mouse
testbitmap Test displaying 1-bit bitmaps
testblitspeed Tests performance of SDL's blitters and converters.
testcdrom Sample audio CD control program
testcursor Tests custom mouse cursor
testdyngl Tests dynamically loading OpenGL library
testerror Tests multi-threaded error handling
testfile Tests RWops layer
testgamma Tests video device gamma ramp
testgl A very simple example of using OpenGL with SDL
testhread Hacked up test of multi-threading
testiconv Tests international string conversion
testjoystick List joysticks and watch joystick events
testkeys List the available keyboard keys
testloadso Tests the loadable library layer
testlock Hacked up test of multi-threading and locking
testoverlay Tests the software/hardware overlay functionality.
testoverlay2 Tests the overlay flickering/scaling during playback.
testpalette Tests palette color cycling
testplatform Tests types, endianness and cpu capabilities
testsem Tests SDL's semaphore implementation
testsprite Example of fast sprite movement on the screen
testtimer Test the timer facilities
testver Check the version and dynamic loading and endianness
testvidinfo Show the pixel format of the display and perfom the benchmark
testwin Display a BMP image at various depths
testwm Test window manager -- title, icon, events
threadwin Test multi-threaded event handling
torturethread Simple test for thread creation/destruction