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Identity, access & authentication tools

Compare IAM, SSO, MFA, CIAM, IGA, PAM, SCIM, and AI agent identity vendors. Filter by company size, deployment model, open source status, pricing, and integrations.

64 vendors · page 1 of 3

Auth0 company logo
Auth0
FeaturedFree tierDeveloper-firstPasswordless

Auth0 is a developer-centric customer identity and access management (CIAM) platform offering authentication, authorization, and user management for web and mobile applications, now operating as Okta Customer Identity Cloud.

WorkOS company logo
WorkOS
FeaturedFree tierDeveloper-first

WorkOS provides a developer API for adding enterprise identity features — SSO, SCIM directory sync, audit logs, and admin portals — to B2B SaaS applications, enabling faster enterprise sales readiness.

Akeyless company logo
Akeyless
Free tierAI agent identityMachine identity

Akeyless is an established identity security platform delivering secrets management, certificate lifecycle management, encryption/KMS, and secure remote access from a unified SaaS, using patented Distributed Fragments Cryptography (DFC) instead of a self-managed vault. In 2025–2026 it extended the platform to AI-agent identity with ephemeral, task-scoped access.

Aserto (Topaz) company logo
Aserto (Topaz)
Open sourceFree tier

Aserto built a fine-grained authorization platform around Topaz, an Apache 2.0 authorizer that pairs Open Policy Agent (Rego) with a Zanzibar-style relationship directory. The hosted Aserto Control Plane shut down on 31 May 2025; Topaz continues as a self-hosted open-source project.

Astrix Security company logo
Astrix Security
Enterprise quoteAI agent identityMachine identity

Astrix Security discovers and secures non-human identities, AI agents, and MCP servers, and provisions secure-by-design agents through its Agent Control Plane with short-lived credentials and just-in-time access. Following its acquisition by Cisco, its capabilities are being integrated into Cisco's identity and zero-trust portfolio.

Authelia
Open sourceFree tierPasswordless

Apache-2.0 open-source authentication and authorization server that adds SSO, two-factor and passkey login and access-control rules in front of applications via reverse proxies, and acts as an OpenID Connect 1.0 provider.

AuthZed (SpiceDB)
Open coreFree tierEnterprise quoteEnterprise

Maker of SpiceDB, the Apache-2.0 "open source permissions database" inspired by Google Zanzibar, offered self-hosted, as usage-priced AuthZed Cloud, as Dedicated cloud, or as a licensed self-hosted enterprise build.

Casbin company logo
Casbin
Open sourceFree tierEnterprise

Casbin is an Apache 2.0 open-source authorization library, embedded in-process, that evaluates ACL, RBAC, ABAC and other models defined in a model.conf file against policy rules loaded from CSV or a database adapter. It entered the Apache Incubator in February 2026.

Clutch Security company logo
Clutch Security
Enterprise quoteAI agent identityMachine identity

Clutch Security is a non-human identity (NHI) security platform that maps service accounts, keys, tokens, and AI agents to their origins via its Identity Lineage graph, then layers on lifecycle management, posture, and threat detection. It added an Agentic AI Governance module for discovering and setting guardrails around AI agents and their credential usage.

Corsha company logo
Corsha
Enterprise quoteMachine identity

Corsha secures machine-to-machine and API communication with trusted machine identities and dynamic, MFA-style authentication (m-MFA) for machines, plus connection discovery and identity-based access control. It is purpose-built for operational technology, defense, and critical infrastructure, deployable as SaaS or self-hosted via hardware and virtual control points.

Defakto company logo
Defakto
Enterprise quoteAI agent identityMachine identity

Defakto (formerly SPIRL, rebranded in 2026) is a non-human identity and access management platform built on the SPIFFE standard. It issues dynamic, cryptographically verifiable identities for services, workloads, CI/CD pipelines, and AI agents in place of static credentials and service accounts.

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