Head-to-Head Comparison · Alternative to Microsoft Authenticator · 🔐 security
Microsoft Authenticator vs 2FAS
Open-source authenticator and password manager that stores 2FA tokens and passwords locally on your device, with zero-knowledge encryption and no account required. Here is how 2FAS ($0/mo open source) stacks up against Microsoft Authenticator ($6/mo) across cost, hosting, data privacy, and real-world trade-offs.
2FAS is a verified Open Source-licensed open-source replacement for Microsoft Authenticator. Switching from Microsoft Authenticator ($6/mo) saves $72/yr per solo seat, or $360/yr for a 5-person team. Deployment: Runs on Local.
The catch: Community-driven open source project without dedicated enterprise SLAs.
Microsoft Authenticator vs 2FAS Specifications
facts verified 2026-11-07
| Dimension | Microsoft Authenticator (Paid) | 2FAS (Replacement) |
|---|---|---|
| Monthly Price | $6 / mo | $0 / mo |
| 1-Year Cost (1 seat) | $72 / yr | $0 / yr (Save $72) |
| 1-Year Cost (5 seats) | $360 / yr | $0 / yr (Save $360) |
| 1-Year Cost (10 seats) | $720 / yr | $0 / yr (Save $720) |
| Source & License | Proprietary SaaS | open source Open Source |
| Where It Runs | Vendor Cloud | Local (on your machine) |
| Platforms | Web / Cloud | desktopcross-platformone-click install |
| GitHub Stars | — | ★ 1.6k (active nov 2026) |
Deep Dive: Switching from Microsoft Authenticator to 2FAS
Trade-offs, installation & data architecture
What you trade away
Community-driven open source project without dedicated enterprise SLAs.
How to deploy 2FAS
Clone https://github.com/twofas/2fas-android or deploy with Docker Compose
What it takes to run
Download the native package or installer for your operating system.
Where your data lives
All application data lives locally on your own machine.
Why fork 2FAS instead of vibe-coding a Microsoft Authenticator clone?
Instead of paying recurring SaaS fees for Microsoft Authenticator or rebuilding it from scratch, deploy one of the 2 battle-tested open-source alternatives like Aegis Authenticator.
Microsoft Authenticator vs 2FAS FAQ
Is 2FAS a good free alternative to Microsoft Authenticator?+
Yes. 2FAS is a verified open-source (Open Source) replacement for Microsoft Authenticator. Open-source authenticator and password manager that stores 2FA tokens and passwords locally on your device, with zero-knowledge encryption and no account required.
What is the catch when switching from Microsoft Authenticator to 2FAS?+
Community-driven open source project without dedicated enterprise SLAs.
How much do you save switching from Microsoft Authenticator to 2FAS?+
Microsoft Authenticator costs $6/mo ($72/yr) per seat, whereas 2FAS is $0/mo. Switching saves $72/yr for a solo user, $360/yr for a 5-person team, and $720/yr for a 10-person team.
How do I install or self-host 2FAS instead of Microsoft Authenticator?+
Install: Clone https://github.com/twofas/2fas-android or deploy with Docker Compose. Setup: Download the native package or installer for your operating system.
