reCAPTCHA - reCAPTCHA is a free security service that protects your websites from spam and abuse.
Microsoft BitLocker - BitLocker is a full disk encryption feature included with Windows Vista and later.
hCaptcha - Do you use a captcha to keep out bots? hCaptcha is a drop-in replacement for reCAPTCHA that earns website owners money and helps companies get their data labeled.
Paubox - Paubox provides HIPAA compliant email encryption without the hassle of extra steps.
scr.im - Don't share your email on public sites.
OpenSSH - OpenSSH is a free version of the SSH connectivity tools that technical users rely on.