Development		Distributions		Dock applications
	Environments Graphics libraries Libraries Toolkits Tools		Distributions		APM Entertainment Multimedia Network System Time
	Education		File management		General tools
	Artificial intelligence Astronomy Atmosphere Biology Cartography Chemistry Laboratory Mathematics Plotting Reference Scientific		Backup and restore File management File system Packaging Synchronization		Clock and timers Clustering Compression utilities Miscellaneous utilities Printing
	Interface		Languages		OS management
	Enhancements Shells Terminal		Ada Algol Assemblers BASIC C Cobol Forth Fortran Java compilers Java interpreters LISP ML Miscellaneous Modula Oberon Objective C Pascal Perl Prolog Python Scheme Smalltalk TCL / TK		Boot managers CPU Disk utilities Emulators Kernel patches Kernel utilities Memory Preferences Resource meters Task manager
	Security		X-Window
	Encryption Secure socket User management		Configuration Desktop managers Servers