Life & fun · alternatives · 2026

24 alternatives to Slick Login - Seamless Login which users will love it

Slick Login is a login system designed to provide a seamless authentication experience. It streamlines the sign-in process for users across web applications. The product targets developers and website owners looking to… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Slick Login - Seamless Login which users will love it launched in 2013; newer entries below may have overtaken it.

1
Fast▲472
World's fastest login and checkout
2019 · its alternatives →
2
MojoAuth▲263
Simple & Easy passwordless authentication for website & apps
2021 · mojoauth.com · its alternatives →
3
MojoAuth 2.0▲263
Easiest way to add passwordless login to your apps & website
2022 · mojoauth.com · its alternatives →
4
Which Login?▲286
Never forget how you signed into a website anymore
2019 · whichlogin.com · its alternatives →
5
Passage by 1Password▲236
Frictionless security: auth & user management with passkeys
2023 · 1password.com · its alternatives →
6
Login with HN (Unofficially)▲436
(Unofficial) Login with HackerNews
2022 · loginwithhn.com · its alternatives →
7
MojoAuth 3.0 AI▲266
Enhance existing authentication or setup a new login page
2023 · mojoauth.com · its alternatives →
8
WhatsApp Login▲300
Add WhatsApp login to your app or website
2023 · otpless.com · its alternatives →
9
Telegram Login Widget▲417
Official Telegram authentication for websites 🚀
2018 · telegram.org · its alternatives →
10
Chiff▲122
Log in to any website with your face or fingerprint
2021 · chiff.app · its alternatives →
11
Gazepass▲313
Passwordless login API for web and mobile apps
2020 · gazepass.com · its alternatives →
12
0xPass▲87
Auth and login for web3 apps with account abstraction
2023 · 0xpass.io · its alternatives →
13
Descope▲355
Drag-and-drop authentication for your app
2023 · descope.com · its alternatives →
14
No Password Pay▲74
Fast, secure, one-click passwordless login and checkout.
2020 · its alternatives →
15
Frictionless Signup by Segment & Clearbit▲293
Magically autofill forms and improve conversions
2016 · twilio.com · its alternatives →
16
Passkeys▲107
Passwordless login
2023 · developers.google.com · its alternatives →
17
Stack, an open-source Clerk/Firebase Auth alternative▲144
Hey HN! Happy to finally launch Stack. We made it because we like to put apps into production quickly, and authentication & user management was taking up way too much time. We have components like and that automatically adapt to whatever theme & design system you're using. Check the blog post to see the example with Radix UI and Joy UI. Also, there's an admin dashboard for monitoring and editing accounts. Stack is 100% AGPL/MIT-licensed, so you can self-host it. Cheers!
2024 · stack-auth.com · its alternatives →
18
MonoCloud for Startups▲167
One identity layer for your customers, APIs, and agents
Jul 2026 · monocloud.com · its alternatives →
19
WhatsAuth▲72
Frictionless WhatsApp login & OTP for NextGen security
2023 · whatsauth.com · its alternatives →
20
WebSession, a Secure Replacement for Cookies▲182
A protocol for secure browser sessions on the World Wide Web
2023 · websession.dev · its alternatives →
21IB
I built a free, simple login service. Would you use this?▲93
login.land is a completely legitimate, extremely real email provider. Please send mail here. Trust me bro.
2020 · login.land · its alternatives →
22
Shopify No Password Login▲80
Passwordless login using fingerprint and facial recognition
2020 · apps.shopify.com · its alternatives →
23
Password Checkup by Google▲178
A Chrome Extension to help resecure hacked accounts
2019 · chromewebstore.google.com · its alternatives →
24
Uniqkey▲116
Protect every login and let users access with confidence
2025 · uniqkey.eu · its alternatives →

Also compare

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →