Alternatives

The Best 3rd-party Extension Alternatives in 2026

24 alternatives9 free · 10 open source

Looking for something like 3rd-party Extension? Here are 24 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 9 are free or have a free plan and 10 are open source.

About 3rd-party Extensiontusk.subdavis.com
Visit

Use KeePass autofill in Chrome or Firefox with Tusk, an open-source browser extension.

PricingFree
PlatformsWeb

Top picks at a glance

Quick comparison

#AlternativePricingOpen sourcePlatforms
1Plugins —Not statedWeb
2KeePassium FreemiumYesiOS, macOS
3Twofactorauth FreeNot stated—
4Keypass —YesAndroid
5OTPClient —Yes—
6Strongbox —Not statediOS, macOS, Web
7Proton Pass FreeNot statedWeb
82FAS —Not statedAndroid, Browser extension, iOS
9Bitwarden FreemiumYesAndroid, Browser extension, iOS
10Alt Client —Not stated—
24 shown

All 3rd-party Extension alternatives

9

Bitwarden

bitwarden.comFreemiumOpen sourcePick
Also covers password management · open source

Bitwarden stores and syncs passwords and passkeys through browser extensions, desktop and mobile apps, and a web vault. It offers free accounts and paid personal and business plans.

17

Tofu

tofuauth.com
Also covers password management · same kind of website

Tofu, an iOS authenticator, that adds accounts by scanning issuer QR codes and generates time-based or counter-based one-time passwords offline.

23

Ente

github.com/ente-io/enteFreemiumOpen source
Also covers password management · open source

Ente provides an open-source, end-to-end encrypted cloud platform with apps for photos, authenticators, and other stored data.

No alternatives match this filter.

Alternatives to similar tools

All alternatives
What is the best alternative to 3rd-party Extension?
Based on features, tags and platforms, the closest alternatives to 3rd-party Extension are Plugins, KeePassium, and Twofactorauth.
Is there a free alternative to 3rd-party Extension?
Yes. KeePassium, Twofactorauth, and Proton Pass are free or offer a free plan.
Are there open-source alternatives to 3rd-party Extension?
Yes: KeePassium, Keypass, OTPClient, and Bitwarden.

Alternatives are suggested from the purpose and features described in our listings. Different pages for the same product appear once. Read each description to check whether it fits your task. How we choose alternatives · Suggest an alternative