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