Open Authenticator vs Trezur

Comparing two open source alternatives to Google Authenticator and Authy and Microsoft Authenticator. Use the comparison below to decide which one fits your needs.

Open Authenticator

GPL-3.0

Free, open-source cross-platform TOTP authenticator with self-hostable sync backend, built with Flutter.

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Trezur

Fast, secure, light-weight web-app to generate TOTP and HOTP tokens.

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Side-by-side comparison

	Open Authenticator	Trezur
License	GPL-3.0	—
Self-hostable	Yes	Yes
GitHub Stars	90	8
Forks	16	—
Open Issues	6	—
Last Commit	Aug 15, 2026	Aug 6, 2026
First Released	Mar 25, 2024	Feb 15, 2025
Categories	2FA Authentication	2FA Authentication
Tags	#2fa #authentication #cross-platform #totp	#2fa #authentication

GitHub stars over time

Open Authenticator

Trezur8

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