Mac OS 9 software requires Mac OS 9, which was discontinued in 2002, to work. Early versions of Mac OS X came with Mac OS 9 included (referred to as Classic mode) which could be activated from System Preferences. The latest versions of Mac OS X no longer support Classic mode. It will depend upon your specific Mac model whether a version of Mac OS 9 can be persuaded to work.
No, there is not a listed software that will tell you if your apps on OSX Snow Leopard will work on OSX Maverick.
The GamePad Companion software (See links below) allows most gamepads to be configured to work with Mac OS X.
Software written for Mac OS X will only work on a Mac running Mac OS X it will not work with other operating systems such as Windows.
The standard version of Type to Learn Jr. will work with Mac OS X. (see links below)
File management is handled by the software named "Finder" in OSX.
Sorry, but you'll need to go to an Apple Store and buy OSX 10.5.
The current version iLife '11 requires Mac OS X 10.6 (Snow Leopard). The previous version iLife '09 requires Mac OS X 10.5.6 or later.
To legally upgrade from Mac OS X 10.3 to !0.4 you will have to purchase a copy of 10.4 (Tiger).
Insert your Mac Osx install Dvd and click install
The latest is Mac OSx 10.8.3 Mountain Lion as of 3/18,2013.
A new Apple laptop will have DVDs containing all the software that comes installed on the computer including Mac OS X and the iLife suite.
You can purchase the current Macintosh operating system (Mac OS X, Snow leopard 10.6.6) directly from Apple. You can choose to visit one of their many stores, or you can purchase it from their website http://www.apple.com/macosx/