Free Kelvin Software

TempLAB by Bluefive software

Not a real lab, but definitely a handy temperature conversion tool. This tiny instrument will simultaneously show Celsius, Fahrenheit and Kelvin degrees with one push on the slider.

conversion celsius temperature conversion degrees temperature templab

USAPuzzle! Macintosh by Torpedo Software

Take a spin across the USA! Package of challenging puzzles for the states and capitals of the United States. Used in schools and homes around the world; geography scores improve rapidly. Serves as level one for the worldwide version "GeoPuzzle!"

jigsaw geography macintosh education usa

JarCheck by Canadian Mind Products

Check a Java jar to make sure all the javac -target versions of the class files are what you expect. It makes sure that a jar intended to run under an old 1.1 JVM contains no classes accidentally compiled with javac -target 1.5. This should catch classes normally compiled with target 1.1 that were accidentally compiled with 1.5 as a side effect of compiling some 1.5 class.

target java jarcheck minor jar version major