OpenSnitch vs SMTP Diag Tool
A side-by-side look at OpenSnitch and SMTP Diag Tool. For an in-depth review of either product, follow the links below.
OpenSnitch
Security & Privacy
OpenSnitch is an open source application firewall for GNU/Linux systems. It monitors and controls network connections to protect against unwanted access and data leakage. It works by prompting the user to allow or deny connections.
networkfirewallprivacysecurityaccess-control
SMTP Diag Tool
Network & Admin
SMTP Diag Tool is a free, open-source Windows application used to diagnose issues with sending and receiving emails. It can test SMTP servers, validate email addresses, verify DNS records, and check for common email delivery problems.
smtpemaildiagnostictroubleshooting
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