---
title: Two-Factor Authentication
kind: note
description: Software | | Proton Authenticator | Ente Auth | 2FAS Auth | | ---------------------------------- | -----------------------------------------------------------------------------------------------------…
words: 267
readingMinutes: 1
created: '2026-03-28T00:00:00.000Z'
updated: '2026-06-29T10:02:18+02:00'
---
# Software
|                                    | [Proton Authenticator](https://proton.me/authenticator)                                               | [Ente Auth](https://ente.com/auth/)                                                                                                            | [2FAS](/notes/2fas) Auth                                                                                                                                                                       |
| ---------------------------------- | ----------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Docs                               | [Link](https://proton.me/support/authenticator)                                                       | [Link](https://ente.com/help/auth/)                                                                                                            | [Link](https://2fas.com/support/)                                                                                                                                                   |
| [Open source](/notes/open-source)                    | [GPL 3.0](https://github.com/protonpass/android-authenticator?tab=GPL-3.0-1-ov-file) (mobile clients) | [AGPL 3.0](https://github.com/ente-io/ente?tab=AGPL-3.0-1-ov-file) (all clients [and](https://ente.com/blog/open-sourcing-our-server/) server) | [GPL 3.0](https://github.com/twofas) (all clients [and](https://github.com/twofas/2fas-server) server)                                                                              |
| Cross-platform sync                | Yes                                                                                                   | Yes                                                                                                                                            | Only via export/import                                                                                                                                                              |
| <span class="dead-link">E2EE</span>[^1]           | Yes                                                                                                   | Yes                                                                                                                                            | Not relevant                                                                                                                                                                        |
| Imports from                       | Google, 2FAS, Aegis, Bitwarden, Ente, LastPass                                                        | TXT, 2FAS, Aegis, andOTP, Bitwarden, Google, Proton, Raivo, LastPass                                                                           | Aegis, Raivo, LastPass, Stratum, Google, TXT                                                                                                                                        |
| Exports to                         | JSON (password encrypted), TXT, HTML                                                                  | JSON (password encrypted), JSON (unencrypted)                                                                                                  | TXT                                                                                                                                                                                 |
| [macOS](/notes/macos) app                      | [iOS](https://apps.apple.com/app/apple-store/id6741758667) (Silicon only; not a native app)           | [Yes](https://ente.com/auth/)                                                                                                                  | No                                                                                                                                                                                  |
| <span class="dead-link">Homebrew</span>                       | No                                                                                                    | `ente-auth`                                                                                                                                    | Not relevant                                                                                                                                                                        |
| <span class="dead-link">iOS</span> app                        | [Yes](https://apps.apple.com/app/apple-store/id6741758667)                                            | [Yes](https://apps.apple.com/us/app/ente-auth/id6444121398)                                                                                    | [Yes](https://apps.apple.com/us/app/2fas-pass/id6504464955)                                                                                                                         |
| [Android](/notes/android) app                    | [Yes](https://play.google.com/store/apps/details?id=proton.android.authenticator)                     | [Yes](https://play.google.com/store/apps/details?id=io.ente.auth)                                                                              | [Yes](https://play.google.com/store/apps/details?id=com.twofasapp.pass)                                                                                                             |
| F-Droid                            | [Yes](https://f-droid.org/en/packages/proton.android.authenticator.fdroid/)                           | [Yes](https://f-droid.org/packages/io.ente.auth/) (promoted)                                                                                   | No (but [APK](https://github.com/twofas/2fas-pass-android/releases) here)                                                                                                           |
| <span class="dead-link">Windows</span> app | [Yes](https://proton.me/authenticator/download)                                                       | [Yes](https://ente.com/auth/)                                                                                                                  | No                                                                                                                                                                                  |
| [Linux](/notes/linux) app                      | [Yes](https://proton.me/authenticator/download)                                                       | [Yes](https://ente.com/auth/)                                                                                                                  | No                                                                                                                                                                                  |
| Web app                            | No                                                                                                    | [Yes](https://auth.ente.io/)                                                                                                                   | No                                                                                                                                                                                  |
| <span class="dead-link">watchOS</span> app                    | [Yes](https://apps.apple.com/gb/app/proton-authenticator/id6741758667?platform=watch)                 | No                                                                                                                                             | [Yes](https://apps.apple.com/gb/app/2fa-authenticator-2fas/id1217793794?platform=watch)                                                                                             |
| Browser extension                  | No                                                                                                    | No                                                                                                                                             | [Yes](https://2fas.com/auth/browser-extension/), for <span class="dead-link">Chrome</span>, <span class="dead-link">Firefox</span> and <span class="dead-link">Safari</span>  (connects to the mobile app to avoid having to search) |
| Steam code support                 | Unknown                                                                                               | [Yes](https://ente.com/help/auth/migration/steam/)                                                                                             | [Yes](https://2fas.com/support/2fas-auth-mobile-app/how-to-add-a-steam-guard-token/)                                                                                                |

[^1]: End-to-end encryption - only relevant when using synchronization feature