Best alternatives to CK-Authenticator G3 (2026)
9 Chrome extensions that do a similar job to CK-Authenticator G3, closest first. Each shows real store users, its rating, how recently it was updated and how many permissions it asks for.
CK-Authenticator G3 today
CK-Authenticator G3 alternatives, compared
- 1
Authenticator App
Secure two-factor authentication app for iPhone, iPad, iPod, Apple Watch and Mac.
≈20K users2.5★ from 22 ratingsUpdated 3 months ago3 permissions- About 50× fewer users than CK-Authenticator G3
- Rated 1.4 stars higher
- Asks for fewer permissions (3 vs 5)
- 2
2! Authenticator
The private, offline 2FA Authenticator. Import accounts from mobile apps and generate TOTP codes securely
≈10K users4.0★ from 15 ratingsUpdated 7 weeks ago3 permissions- About 100× fewer users than CK-Authenticator G3
- Asks for fewer permissions (3 vs 5)
- 3
2FA Authenticator
This extension generates 2FA authentication codes in your browser.
≈4K users3.5★ from 4 ratingsUpdated 3 months ago4 permissions- About 250× fewer users than CK-Authenticator G3
- Asks for fewer permissions (4 vs 5)
- 4
TOTP Authenticator
Get 2FA OTP instantly from your mobile. Works with TOTP Authenticator mobile app.
≈20K users2.1★ from 22 ratingsUpdated 14 months ago8 permissions- About 50× fewer users than CK-Authenticator G3
- Rated 1.0 stars higher
- Updated less recently
- Asks for more permissions (8 vs 5)
- 5
Omnimed-QHR authenticator
This extension allows healthcare workers from the province of Quebec to get securely authenticated with the QHR access device.
≈40K users3.0★ from 2 ratingsUpdated 7 months ago2 permissions- About 25× fewer users than CK-Authenticator G3
- Updated less recently
- Asks for fewer permissions (2 vs 5)
- 6
Open Two-Factor Authenticator
An open-source two-factor Time-based One-Time Password (TOTP) authenticator with SHA-256 secure storage
≈10K users3.0★ from 11 ratingsUpdated 23 months ago2 permissions- About 100× fewer users than CK-Authenticator G3
- Updated less recently
- Asks for fewer permissions (2 vs 5)
- 7
Basic Authentication
Basic authentication plugin - just keep it simple
≈2K users4.8★ from 6 ratingsNot updated for 4+ years4 permissions- About 500× fewer users than CK-Authenticator G3
- Updated less recently
- Asks for fewer permissions (4 vs 5)
- 8
Authing Secure Authentication
Authing secure authentication extension for browsers.
≈2K users5.0★ from 2 ratingsUpdated 23 months ago3 permissions- About 500× fewer users than CK-Authenticator G3
- Updated less recently
- Asks for fewer permissions (3 vs 5)
- 9
DigiCert Authentication Client Extension
Messaging API between web pages and DigiCert PKI Client
≈100K users3.3★ from 3 ratingsNot updated for 3+ years3 permissions- About 10× fewer users than CK-Authenticator G3
- Updated less recently
- Asks for fewer permissions (3 vs 5)
CK-Authenticator G3 alternatives: questions
What is the best alternative to CK-Authenticator G3?
By users, the most popular alternative is DigiCert Authentication Client Extension with ≈100K users and a 3.3-star rating. The closest match by what it does is Authenticator App.
Is there a CK-Authenticator G3 alternative that asks for fewer permissions?
Omnimed-QHR authenticator asks for 2 permissions, against 5 for CK-Authenticator G3.
How many alternatives to CK-Authenticator G3 are there?
We list 9 close alternatives to CK-Authenticator G3 on the Chrome Web Store, picked by what they do and ranked by how close they are.
Users and ratings are the figures shown on the Chrome Web Store, re-checked continuously. Alternatives are matched on name, description, category and topic. Browse best-of lists by niche.