The OWASP ZAP core project
Java SDK for Fingerprint Pro Server API
a free cross platform checksum utility, supports 58+ hash algorithms
Mature LDAP, LDIF and DSML client with i18n support.
Java library for easy accessing Tor network.
A File Transfer Server built with RBAC and custom business rules
Open Source Penetration Testing / Ethical Hacking Framework
Perform anonymous and non-anonymous pentesting.