Here is a list of cPanels features

Mail
 

• Manage email accounts (add, remove, change password)
• Webmail for all accounts
• Auto-responders
• Custom mail filtering
• Forwarders
• Mailing lists (mailman)
• Ability to modify an MX entry
• Spam filtering (SpamAssassin)

Stats

• Webalizer web stats
• Webalizer FTP stats
• Analog stats
• AWStats
• View latest visitors
• View bandwidth usage
• View error log
• Download raw log file

FTP

• Manage FTP accounts (add, remove, change password)
• Anonymous FTP controls
• Ability to change FTP login message
• Ability to kill FTP sessions

Site Tools

• Web Protect (.htaccess editor)
• Ability to change site and FrontPage password
• Custom error pages
• Redirects
• Ability to edit MIME types
• Ability to edit Apache handlers
• Install/Uninstall FrontPage Extensions
• Search engine submit tool
• File Manager

Subdomains

• Ability to add/remove subdomains
• Subdomain redirects
• Stats for subdomains

Advanced Tools

• SSH access
• Manage GPG keys
• Cron jobs

Pre-Installed CGI Scripts

• Interchange Cart
• Agora Cart
• Bulletin Board
• Java Chat
• HTML Chat
• phpMyChat
• CGI Wrapper (for non-suexec installs)
• Random HTML generator
• Advanced Guestbook
• Counter Generator
• Java Clock Generator
• Java Countdown Generator
• Secure FormMail clone
• CGIEmail
• Entropy Search
• Entropy Banner

Network Tools

• DNS Lookup
• Traceroute

Database Management

• Manage MySQL databases
• phpMyAdmin access