- MIME::Base64 – Encoding and decoding of base64 strings
 - MIME::QuotedPrint – Encoding and decoding of quoted-printable strings
 - Math::BigFloat – arbitrary size floating point math package
 - 
		Math::BigInt – arbitrary size integer math package
		
Math::BigInt::Calc Math::BigInt::FastCalc Math::BigInt::Lib - Math::BigRat – arbitrary size rational number math package
 - Math::Complex – complex numbers and associated mathematical functions
 - Math::Trig – trigonometric functions
 - 
		Memoize – Make functions faster by trading space for time
		
Memoize::AnyDBM_File Memoize::Expire Memoize::NDBM_File Memoize::SDBM_File Memoize::Storable - Module::CPANfile – Parse cpanfile
 - 
		Module::CoreList – what modules shipped with versions of perl
		
Module::CoreList::Utils - 
		Module::Load – runtime require of both modules and files
		
Module::Load::Conditional - Module::Loaded – mark modules as loaded or unloaded
 - Module::Metadata – Gather package and POD information from perl module files