At the recent RSA security conference, the NSA announced that it's making the cyber-security tool Ghidra open source.
A reverse-engineering tool, its probably not as notorious as others from there, and the NSA says it's free of any backdoor --- but then again, that's probably too good be true.
This would appeal to those who are into reverse-engineering, are supporters of the NSA, or aspire to work for it.
Shannon D'Cruz,
CISM, CISSP
www.linkedin.com/in/shannondcruz