English.rb	lets Perl'ish global variables have English names
Env.rb		loads importenv.rb
README		this file
base64.rb	encodes/decodes base64 (obsolete)
benchmark.rb	a benchmark utility
cgi-lib.rb	simple CGI support library (old style)
cgi.rb		CGI support library
cgi/session.rb	CGI session class
complex.rb	complex number suppor
csv.rb		CSV parser/generator
date.rb		date object
date/format.rb	date parsing and formatting
date2.rb	date object (obsolete; use date)
debug.rb	ruby debugger
delegate.rb	delegates messages to other object
drb.rb		distributed Ruby
e2mmap.rb	exception utilities
erb.rb		tiny eRuby library
eregex.rb	extended regular expression (just a proof of concept)
fileutils.rb	file utilities
finalize.rb	adds finalizer to the object
find.rb		traverses directory tree
forwardable.rb	explicit delegation library
ftools.rb	file tools
getoptlong.rb	GNU getoptlong compatible
getopts.rb	parses command line options (use getoptlong)
gserver.rb	general TCP server
importenv.rb	imports environment variables as global variables
ipaddr.rb	defines the IPAddr class
irb.rb		interactive ruby
jcode.rb	Japanese text handling (replace String methods)
logger.rb	simple logging utility
mailread.rb	reads mail headers
mathn.rb	extended math operation
matrix.rb	matrix calculation library
mkmf.rb		Makefile maker
monitor.rb	exclusive region monitor for thread
mutex_m.rb	mutex mixin
net/ftp.rb	ftp access
net/http.rb	HTTP access
net/imap.rb	IMAP4 access
net/pop.rb	POP3 access
net/protocol.rb	abstract class for net library (DO NOT USE)
net/smtp.rb	SMTP access
net/telnet.rb	telnet library
observer.rb	observer desing pattern library (provides Observable)
open-uri.rb	easy-to-use network interface using URI and Net
open3.rb	opens subprocess connection stdin/stdout/stderr
optparse.rb	command line option analysis
ostruct.rb	python style object
parsearg.rb	argument parser using getopts
parsedate.rb	parses date string
pathname.rb	Object-Oriented Pathname Class
ping.rb		checks whether host is up, using TCP echo.
pp.rb		pretty print objects
prettyprint.rb	pretty printing algorithm
profile.rb	runs ruby profiler
profiler.rb	ruby profiler module
pstore.rb	persistent object strage using marshal
racc/parser.rb	racc (Ruby yACC) runtime
rational.rb	rational number support
rdoc            source-code documentation tool
readbytes.rb	define IO#readbytes
resolv-replace.rb	replace Socket DNS by resolve.rb
resolv.rb	DNS resolver in Ruby
rexml		an XML parser for Ruby, in Ruby
rubyunit.rb	original Ruby Unit testing framework
scanf.rb	scanf for Ruby
set.rb		defines the Set class
shell.rb	runs commands and does pipeline operations like shell
shellwords.rb	split into words like shell
singleton.rb	singleton design pattern library
soap		SOAP 1.1 implementation
sync.rb		2 phase lock
tempfile.rb	temporary file with automatic removal
test/unit	Ruby Unit Testing Framework
thread.rb	thread support
thwait.rb	thread syncronization class
time.rb		RFC2822, RFC2616, ISO8601 style time formatting/parsing
timeout.rb	provides timeout
tmpdir.rb	retrieve temporary directory path
tracer.rb	execution tracer
tsort.rb	topological sorting
un.rb		Utilities to replace common UNIX commands in Makefiles etc
uri.rb		URI support
uri/ftp.rb	ftp scheme support
uri/http.rb	http scheme support
uri/https.rb	https scheme support
uri/ldap.rb	ldap scheme support
uri/mailto.rb	mailto scheme support
weakref.rb	weak reference class
webrick.rb	WEB server toolkit
wsdl		WSDL 1.1 implementation
xmlrpc		XML-RPC implementation
xsd		XML Schema Datatypes implementation
yaml.rb		YAML implementation