Sustainable Substitutes for Google Authenticator

The two factor authenticator by Google with the dominant market share.

Reasons to avoid Google Authenticator

Users should avoid Google Authenticator due to its integration with Google’s broader ecosystem, which is known for invasive data collection, lack of transparency, and privacy risks. The app itself lacks end-to-end encryption for backups, exposing users to potential data breaches and unauthorized access. By using Google Authenticator, users are locked into Google’s monopolistic infrastructure, which limits flexibility and reinforces reliance on a Trump supporting Big Tech player.

For those prioritizing privacy, sustainability, and ethical technology, migrating to open-source, privacy-focused alternatives is a more responsible choice.

For those prioritizing privacy, sustainability, and ethical technology, migrating to open-source, privacy-focused alternatives is a more responsible choice.

Ethical and Sustainable Google Authenticator Alternatives

Aegis Authenticator

An open-source authenticator app, storing all data locally only.

Aegis does not collect or transmit user data to external servers. All data remains on the user’s device, ensuring privacy.
Aegis is ad-free, providing a clean and uninterrupted user experience.
Aegis is free and open-source software (FOSS), allowing users to inspect, modify, and contribute to its codebase.
No user registration or account creation is required to use Aegis, enabling anonymous usage.
Aegis is available for free, with no mandatory premium features or subscriptions.
Aegis functions entirely offline, as it does not rely on cloud synchronization or internet connectivity for core features.
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Ente Authenticator

A two factor authenticator app, offering encrypted cloud synchronisations as a paid service.

Ente Authenticator prioritizes user privacy by encrypting all data and ensuring only the user can access their authentication codes.
Ente Authenticator functions offline for generating 2FA codes, though cloud sync requires an internet connection.
The app is ad-free, providing a clean and focused user experience.
Ente Authenticator does not require registration to use its core functionality for generating and storing 2FA codes locally. However, if you wish to use the optional end-to-end encrypted cloud sync, you need to create an Ente account.
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The 7 main issues with Google Authenticator

Privacy Concerns - User data is likely to be stored and used against users' best interest.

Google Authenticator lacks end-to-end encryption for backups, and its integration with Google’s broader ecosystem raises concerns about data privacy and potential access to user information.

Lack of Transparency - Opacity in operations, data handling, or supply chains, making it difficult for users to understand practices.

Google’s data collection and privacy practices, including those related to Authenticator, have been criticized for their opacity, particularly regarding how user data is handled and secured.

Big Tech - Big Tech companies do not nourish people and planet. This is especially true in times of political tension.

Google is one of the largest tech companies, contributing to market monopolisation and exploitative data practices. Source: EFF: Google Search Monopoly and Privacy Concerns (2025)

No Carbon Neutrality Goals - No goals for carbon neutrality is a bad sign as it shows lack of commitment to holding crucial thresholds for global climate warming.

Google recently erased its Carbon Neutrality Goals in favour of massively increasing its use of Gemini in its various products. Source: Toms Hardware: Google quietly removes net-zero carbon goal from website amid rapid power-hungry AI data center buildout (2025)

Monopoly - Market dominance that stifles competition and limits user choice.

Using Google Authenticator increases vendor lock-in, making it harder to get away from Google products in general.

Tax Avoidance - Aggressive strategies are being deployed to avoid paying taxes.

Google is known for aggressively avoiding paying taxes, so much that taxing it got its own term: "Google tax". Source: Wikipedia: Google Tax

Support of Authoritarian Regimes - Companies actively supporting, financing and legitimising regimes and unethical policies.

Google has kissed Trump's ring by donating $1 million to his inauguration. Google is adapting its products to satisfy the administration.Time: How Google Appears to Be Adapting Its Products to the Trump Presidency (2025)