| Strscan | 
Fast string lexical scanner library. | 
| Amrita | 
An html/xhtml template library for Ruby. It makes html documents from a template and model data. | 
| Ruby mysql | 
mysql interfacing from ruby. handy with your databases. | 
| Ruby postgres | 
Extension library to access a PostgreSQL database from Ruby. | 
| Ruby/DBI | 
A database independent interface for accessing databases - similar to Perl's DBI.
	With the following drivers: DBD/Pg, DBD/Mysql,
	DBD/proxy, DBD/sqlrelay, DBD/ODBC.
	Other drivers are possible. | 
| mod_ruby | 
Direct apache web server interface and accelerator.
	default extension filename: .rbx .  
    You can have mod_ruby apache directive for your sites,
    and have auto-reload enabled. | 
 | eruby | 
 Ruby embeded in html, a popular extension to mod_ruby. 
   handles .rhtml files.
  | 
| RAA - druby | 
Distributed ruby. DRb can send message to other ruby script that like Java's RMI. | 
| RAA - ruby-rss | 
parsing lib for creating, downloading, and caching RSS | 
| XML Parser | 
An interface for James Clark's expat xml library. | 
| RAA - uconv | 
A code conversion library for UCS-4, UTF-16, UTF-8,
EUC-JP and CP932. | 
| HTML/Template | 
templating system | 
| HTML/FillinForm | 
html forms | 
| CGI_Application | 
cgiapp from moonwolf | 
| tk.rb | 
to make Tk/X11 based ruby apps | 
| ruby-pcap | 
interface to LBL Packet Capture library. 
   includes classes to access packet header fields. |