Tiger VNC

High-performance, multi-platform VNC client and server. ([Source Code](https://github.com/TigerVNC/tigervnc)) `GPL-2.0` `C++`

X2go

X2Go is an open source remote desktop software for Linux that uses the NoMachine/NX technology protocol. ([Source Code](https://code.x2go.org/gitweb)) `GPL-2.0` `Perl`

AutoShun

AutoShun is a Snort plugin that allows you to send your Snort IDS logs to a centralized server that will correlate attacks from your sensor logs with other snort sensors, honeypots, and mail filters from around the world.

DNS-BH

The DNS-BH project creates and maintains a listing of domains that are known to be used to propagate malware and spyware. This project creates the Bind and Windows zone files required to serve fake replies to localhost for any requests to these, thus preventing many spyware installs and reporting.

Tor Bulk Exit List

CollecTor, your friendly data-collecting service in the Tor network. CollecTor fetches data from various nodes and services in the public Tor network and makes it available to the world. If you're doing research on the Tor network, or if you're developing an application that uses Tor network data, this is your place to start. [TOR Node List](https://www.dan.me.uk/tornodes) / [DNS Blacklists](https://www.dan.me.uk/dnsbl) / [Tor Node List](http://torstatus.blutmagie.de/)

TOR Node List

TOR Node List

Project Honey Pot

Project Honey Pot is the first and only distributed system for identifying spammers and the spambots they use to scrape addresses from your website. Using the Project Honey Pot system you can install addresses that are custom-tagged to the time and IP address of a visitor to your site. If one of these addresses begins receiving email we not only can tell that the messages are spam, but also the exact moment when the address was harvested and the IP address that gathered it.

MISP - Open Source Threat Intelligence Platform

MISP threat sharing platform is a free and open source software helping information sharing of threat intelligence including cyber security indicators. A threat intelligence platform for gathering, sharing, storing and correlating Indicators of Compromise of targeted attacks, threat intelligence, financial fraud information, vulnerability information or even counter-terrorism information. The MISP project includes software, common libraries ([taxonomies](https://www.misp-project.org/t

Gophish

An Open-Source Phishing Framework.

Portswigger

PortSwigger offers tools for web application security, testing & scanning. Choose from a wide range of security tools & identify the very latest vulnerabilities.

ModSecurity

ModSecurity is a toolkit for real-time web application monitoring, logging, and access control.

sqlmap

sqlmap is an open source penetration testing tool that automates the process of detecting and exploiting SQL injection flaws and taking over of database servers. It comes with a powerful detection engine, many niche features for the ultimate penetration tester and a broad range of switches lasting from database fingerprinting, over data fetching from the database, to accessing the underlying file system and executing commands on the operating system via out-of-band connections.