Open Authenticator

Free, open-source, cross-platform TOTP manager for securing online accounts with 2FA.

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Open Authenticator is a free, open-source, cross-platform TOTP manager for two-factor authentication, built as a simple, auditable alternative to closed-source authenticator apps. It's aimed at users who want to verify exactly how their 2FA secrets are handled rather than trusting a closed-source app.

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Problem & pain-point mapping
Who we surface it to (audience fit)
What it's a strong alternative to
Trust & credibility signals

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