SpiderFoot : With almost 200 modules and growing, SpiderFoot provides an easy-to-use interface that enables you to automatically collect Open Source Intelligence (...
BlackBox : Safely store secrets in a VCS repo (i.e. Git, Mercurial, Subversion or Perforce).
Security Headers : I built securityheaders.io after deploying security headers like CSP and HSTS to my own site. I wanted a quick and easy way to check if other sites we...
DNS Report : The free, thorough report on the DNS for your domain
Freebase : A community-curated database of well-known people, places, and things