OTX Reputation Monitor Alert allows users to receive free, real-time alerts if one of their IPs or domains is found in a hacker forum, a blacklist, or the AlienVault Open Threat Exchange (OTX) database, indicating a potential breach.
The OTX database is the industry's only open and collaborative threat intelligence system, providing the most comprehensive IP reputation data available. Start monitoring the reputation of your IPs and domains now (for free) with AlienVault OTX Reputation Monitor Alert Service.
This is not really a Free application. It is a free trial for 30 days. In reality it is a commercial product for which they have not revealed the price.
The free item is access to a website, not an application.