Open-source alternatives to popular software
OSS Alternatives covers a small number of proprietary tools in depth rather than a large, shallow directory. Each page below ranks genuinely open-source alternatives by GitHub activity and spells out license, self-hosting, and pricing so you can pick one with confidence.
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Identity & Access alternatives
hCaptcha
Bot protection CAPTCHA with privacy and monetization options
6 alternatives
Enpass
Password manager with local vault storage
8 alternatives
Authy
Two-factor authentication app
2 alternatives
Seon
Fraud prevention and AML platform
3 alternatives
Sprinto
Compliance automation for SOC 2 and ISO 27001
4 alternatives
AWS GuardDuty
Managed threat detection for AWS accounts
1 alternative
CyberArk
Privileged access management and identity security
1 alternative
Delve
Compliance automation for SOC 2, ISO 27001, and HIPAA
4 alternatives
Okta
Identity and access management platform
14 alternatives
Cloudflare Turnstile
Free, privacy-friendly CAPTCHA alternative
6 alternatives
WorkOS
Enterprise-ready authentication, SSO, and directory sync for B2B apps
11 alternatives
Proton Pass
Encrypted password manager from Proton with aliases and passkeys
8 alternatives
reCAPTCHA
Google service that tells humans and bots apart on web forms
6 alternatives
Drata
Compliance automation platform for SOC 2, ISO 27001, and other frameworks
4 alternatives
Vanta
Compliance automation platform for SOC 2, ISO 27001, and other frameworks
4 alternatives
Clerk
Drop-in authentication and user management for modern web apps
9 alternatives
1Password
Password manager and secrets platform for individuals, families, and teams
10 alternatives
Keeper
Password manager and secrets platform for individuals, teams, and enterprises
11 alternatives
Auth0
Managed identity platform for authentication and authorization
13 alternatives