These are test programs for the SDL library:

testver Check the version and dynamic loading and endianness

testtypes Check to see if the data types are the correct size

testhread Hacked up test of multi-threading

testlock Hacked up test of multi-threading and locking

testerror Tests multi-threaded error handling

testsem Tests SDL's semaphore implementation

testtimer Test the timer facilities

loopwave Audio test -- loop playing a WAV file

testcdrom Sample audio CD control program

testkeys List the available keyboard keys

testvidinfo Show the pixel format of the display

checkkeys Watch the key events to check the keyboard

testwin Display a BMP image at various depths

graywin Display a gray gradient and center mouse on spacebar

testsprite Example of fast sprite movement on the screen

testbitmap Test displaying 1-bit bitmaps

testalpha Display an alpha faded icon -- paint with mouse

testwm Test window manager -- title, icon, events

threadwin Test multi-threaded event handling

testgl A very simple example of using OpenGL with SDL

testjoystick List joysticks and watch joystick events