Core Impact
Commercial exploit software package with GUI
www1.corest.com Details

Ethical Hacking Course
Commercial hacker training course on how to write and use exploits.
www.infosecinstitute.com Details

FrSIRT Exploits Archive
Archive of current 0day exploits from European and Asian sources. French and English language content provided.
www.frsirt.com Details

Fyodor's Exploit World
A large and descriptive exploit archive organized by affected operating systems.
www.insecure.org Details

HoobieNet's Security Exploits
Collection of security exploits for various operating systems.
www.hoobie.net Details

Metasploit Project
Exploit/shellcoding generation tool.
metasploit.org Details

NGS Research
Series of papers on how to write exploits and discover vulnerabilities
www.nextgenss.com Details

Network Security Archive
A collection of mailing list archives dealing with exploits, vulnerability development and hacking
www.networksecurityarchive.org Details

PacketStorm
Large archive of exploits categorized by subject.
www.packetstormsecurity.org Details