RBAC

The power to build anything. Discover why thousands of SaaS founders and software teams trust Kinde to power their customer authentication, feature flagging, and billing needs.

freemium $25.0 / Monthly (Professional plan starting from 500 monthly active users)

Auth0 is a program for people to get authentication and authorization services for their own business use.

Open Source

Amazon Cognito lets you add user sign-up, sign-in, and access control to your web and mobile apps quickly and easily. It scales to millions of users and supports sign-in with social identity providers and enterprise identity providers via SAML 2.0.

Elegant user management, tailor-made for B2B SaaS

Try for free freemium

The "lean" tech stack for SaaS start-ups

Open Source User Authentication - An Alternative to Auth0 / Firebase Auth / AWS Cognito

Open Source freemium

Application and Data, Application Utilities, and User Management and Authentication

An framework agnostic authentication & authorization library for ≥PHP 5.4.

Open Source

ConfigCat is a developer-centric feature flag service with unlimited team size, awesome support, and a reasonable price tag.

freemium

Flagsmith lets you manage feature flags and remote config across web, mobile and server side applications. Deliver true Continuous Integration. Get builds out faster. Control who has access to new features. We're Open Source.

Try for free Open Source freemium

AppFlags makes it easy to use feature flags in your application.

The Open Source A/B Testing Platform

Open Source