Open source
Alternatives to ConfigCat
12 tools like ConfigCat, chosen by what they do. About ConfigCat
Open source
Flagsmith
Open source feature flags with remote config and A/B tests
Release FlagsOpen source flag service
Open source
Unleash
Open source feature flags for releasing and rolling back changes
Release FlagsOpen source feature flags
Open source
Nakama
Open source game backend for multiplayer and social games
Backend PlatformsOpen source game backend
Curated
LaunchDarkly
Feature flags and gradual rollouts with automatic rollback
Release FlagsFeature management platform
Freemium
Open source
SuperTokens
Open source user authentication with prebuilt login screens
AuthenticationOpen source auth for apps
Freemium
FusionAuth
Customer identity and access management, self-hosted or cloud
AuthenticationDeveloper friendly identity
Open source
PocketBase
Single-file open source backend with database, auth and storage
Backend as a ServiceSingle-file backendArchived
Open source
Logto
Open source auth platform for sign-in, SSO and roles
AuthenticationOpen source auth and identity
Free trial
Postmark
Transactional email delivery service with an API, SMTP and templates
Email SendingReliable transactional email
Freemium
