Best Open Source Identity Providers (CIAM and SSO) in 2026
A fair comparison of eight open source identity providers for single sign-on and customer login in 2026: Keycloak, Authgear, Authentik, Zitadel, Ory, Authelia, SuperTokens and Logto. Licences, protocols, passkeys, hosting and who each one suits.
Keycloak Pricing: What It Really Costs to Run Keycloak
Keycloak is free to download, but not free to run. A simple cost model you can fill in, an illustrative worked example, and how support, Red Hat build of Keycloak, third-party hosting and a vendor-run private cloud change the numbers.
Keycloak vs Auth0 (and Authgear): Which Should You Choose in 2026?
Keycloak or Auth0? A fair comparison of the open-source identity server and the hosted customer identity platform: licences, hosting, pricing, protocols, customisation, support and data sovereignty, with Authgear as a third option.
Keycloak vs Okta (and Authgear): Self-Hosted vs SaaS Identity
Keycloak or Okta? A fair comparison of the open-source identity server you run yourself and the SaaS identity platform: licences, hosting, pricing, workforce and customer identity, protocols, support and data sovereignty, with Authgear as a third option.
Keycloak vs Zitadel (and Authgear): Open Source Identity Compared
Keycloak and Zitadel are two of the strongest open source identity providers, but they differ on licence, architecture, multi-tenancy and hosting. Here is how they compare in 2026, and where Authgear fits as a third option.
Managed Keycloak vs a Private Cloud: What You Actually Get
The Keycloak project doesn't run a cloud service. Here is what you get from each route instead: running it yourself, a third-party Keycloak host, Red Hat build of Keycloak, or a vendor-run private cloud, compared on upgrades, support, region and exit.
Sovereign Cloud and the CLOUD Act: What They Mean for Login Data
What the US CLOUD Act lets US authorities request, what "sovereign cloud" really means, and the three ways to run your login system if you are in the UK or EU. With a checklist of questions for any auth vendor.
UK Data Sovereignty for Login and Identity Data (2026 Guide)
What UK data sovereignty means for your login system: where user data sits, who runs the system, and whose law applies, from UK GDPR and the Data (Use and Access) Act 2025 to the US CLOUD Act. With a checklist for choosing an auth provider.
Top Twilio Alternatives for SMS and OTP (2026 Switching Guide)
Why teams leave Twilio, the best Twilio alternatives for SMS and OTP in 2026 (Telnyx, Plivo, Vonage, Sinch, Bird, AWS, Authgear), and a migration checklist for switching without breaking login.
Best OTP Service Providers in 2026: Pricing Compared
Verified August 2026 pricing for 10 OTP service providers — Twilio Verify, Vonage, Plivo, MSG91, Firebase, and more. What each really costs per verification, which are quote-based, and how to pick the right one.
Twilio Verify Pricing & Alternatives (2026)
Twilio Verify charges $0.05 per successful verification on top of channel fees. Here's what it really costs at scale in 2026, when it's worth paying for, and the best alternatives for cutting OTP costs.
WhatsApp API Pricing Explained (2026)
WhatsApp switched to per-message pricing in 2025. Here's how WhatsApp Business API pricing works in 2026 — by message category and country — and what it really costs to send authentication (OTP) messages.
Authentication Solutions: A Complete Guide for Modern Apps
Choosing the right authentication solution is one of the most consequential technical decisions you'll make for your app. This guide covers every major auth type, a clear build-vs-buy framework, and a side-by-side comparison of the leading platforms.
Open Source WebAuthn and FIDO2 Authentication: Authgear vs Keycloak vs Hanko for Passkey-First Apps
Accelerate your strategic passwordless transition by comparing leading open-source WebAuthn/FIDO2 solutions. Evaluate platforms like Authgear and Keycloak for optimal security and application scalability.
Self-Hosted MFA for Financial and Government Organizations: On-Premise Authentication Without SaaS Lock-In
Financial institutions and government agencies need modern MFA with data control. Self-hosted Authgear avoids SaaS risks, ensuring security, compliance, and full infrastructure ownership.
What Is FIDO2? Complete Guide to FIDO Authentication
FIDO2 is an open authentication standard that lets users sign in without passwords. This guide explains what FIDO2 is, how it works, how it compares to FIDO U2F, and how passkeys build on top of it.
Auth0 Alternatives for Frontline Workforce Authentication
Compare the leading open-source MFA solutions for enterprise internal applications. Discover self-hosted authentication platforms that support modern MFA for financial institutions, government organizations, and businesses.
Authentik vs Keycloak (and Authgear): Self-Hosted SSO Compared
Authentik or Keycloak? A fair, up-to-date comparison of the two most popular self-hosted identity providers, with Authgear as a third option, plus what each means for data sovereignty.
Top Open-Source MFA Solutions for Enterprise Applications (2026)
Compare the leading open-source MFA solutions for enterprise internal applications. Discover self-hosted authentication platforms that support modern MFA for financial institutions, government organizations, and businesses.
Auditing and Compliance in CIAM: What Logs, Events, and Controls Actually Matter
Understand which CIAM logs, events, and security controls matter most for auditing and compliance. Learn how to design audit-ready CIAM systems.
From Passwords to Passkeys: A Phased Migration Plan for Existing Users
Learn how to migrate existing users from passwords to passkeys with a phased approach. Discover best practices for secure, user-friendly passwordless authentication at scale.
Empowering the Deskless Workforce: IAM Best Practices for IT & HR
Discover IAM best practices to securely manage deskless workforces. Learn how IT and HR can collaborate to improve access, security, and productivity at scale.
IAM at Scale: Cost-Effective Identity Management for Large Frontline Teams
Learn how to implement cost-effective IAM solutions at scale for large frontline teams, focusing on security, efficiency, and automation.
Top Open-Source Ping Identity Alternatives in 2026: Secure & Self-Hosted Options
Explore the best open-source Ping Identity alternatives in 2026. Compare features, deployment models, security, and use cases to choose the right identity solution for your team.