GoLismero is an open source framework for security testing. It's currently geared towards web security, but it can easily be expanded to other kinds of scans.
goofile
Use this tool to search for a specific file type in a given domain.
hping3
hping is a command-line oriented TCP/IP packet assembler/analyzer. The interface is inspired to the ping(8) unix command, but hping isn't only able to send ICMP echo requests. It supports TCP, UDP, ICMP and RAW-IP protocols, has a traceroute mode, the ability to send files between a covered channel, and many other features.
InTrace
InTrace is a traceroute-like application that enables users to enumerate IP hops exploiting existing TCP connections, both initiated from local network (local system) or from remote hosts. It could be useful for network reconnaissance and firewall bypassing.
iSMTP
Test for SMTP user enumeration (RCPT TO and VRFY), internal spoofing, and relay.
lbd
lbd (load balancing detector) detects if a given domain uses DNS and/or HTTP Load-Balancing (via Server: and Date: header and diffs between server answers).
masscan
This is the fastest Internet port scanner. It can scan the entire Internet in under 6 minutes, transmitting 10 million packets per second.
Metagoofil
Metagoofil is an information gathering tool designed for extracting metadata of public documents (pdf,doc,xls,ppt,docx,pptx,xlsx) belonging to a target company.
Metasploit Framework
Metasploit is a penetration testing platform that enables you to find, exploit, and validate vulnerabilities.
Miranda
Miranda is a Python-based Universal Plug-N-Play client application designed to discover, query and interact with UPNP devices, particularly Internet Gateway Devices (aka, routers). It can be used to audit UPNP-enabled devices on a network for possible vulnerabilities.