Best Single Sign-On (SSO) Solutions for Accountants

Enterprise single sign-on built to secure legacy SAP GUI and ERP logins with certificates.

Editor's takeSAP SSO scores 9.4 out of 10 for integrations, the top mark among SSO tools rated here. It uses FIPS 140-2 certified encryption to secure legacy SAP GUI connections that modern web SSO tools cannot reach. Setup often requires specialized SNC consulting, and pricing is not published.

Security-first SSO from Cisco combining device health checks, MFA, and FedRAMP authorization.

Editor's takeDuo's reputation rests on simplicity, and reviewers consistently call setup and daily use 'exceptional' compared to heavier IAM tools. Backed by Cisco, it holds FedRAMP authorization and a 9.5/10 TrustRadius score. SSO is included from $3 monthly, but the integration library runs in the hundreds, short of Okta's 7,000-plus.

An enterprise SSO platform with the largest pre-built app integration network in identity management.

Editor's takeOkta's integration network tops 7,000 pre-built apps, the largest in identity management, and it has held Gartner Magic Quadrant Leader status for Access Management nine years running. Pricing starts at $2 per user monthly for SSO, but a $1,500 annual minimum and paid add-ons for MFA ($3) and Lifecycle Management ($4) raise total cost quickly. A 2023 breach of Okta's support system exposed names and emails of all support users, a real mark against its security record despite FedRAMP and HIPAA certification elsewhere.

High-assurance SSO and passwordless access platform built for regulated enterprises and government.

Editor's takeEntrust targets high-assurance environments where FIPS 140-3 validation and Common Criteria matter more than a slick interface. It backs that with a second consecutive year as a Gartner Challenger in Access Management. Pricing starts transparently at $2 per user per month, but Gartner Peer Insights reviewers say its app catalog is messier and less standardized than Okta's.

Identity and access management platform with SSO and MFA across a catalog of 6,000+ pre-integrated apps.

Editor's takeOneLogin, now under One Identity since its 2021 acquisition, undercuts Okta's pricing while covering the same core SSO and MFA ground with 6,000-plus pre-built app integrations. Real-time Active Directory sync avoids the batch-sync delays some rivals have. The 2017 breach is now years old and remediated, but it remains a documented data point buyers should know.

A unified SSO and device management platform that checks device compliance before granting access.

Editor's takeScalefusion OneIdP folds SSO into its device management platform, so access depends on both user credentials and whether the device itself is managed and compliant, a Zero Trust step many standalone SSO tools skip. Support responds in under 4 minutes on live chat, and the platform holds ISO 27001 and SOC 2 Type 2 certification. The catch is pricing, OneIdP sits outside the standard $2 to $6 plans and requires a separate quote or the pricier Scalefusion 360 suite.

Open-source identity platform with enterprise SSO, LDAP federation and zero licensing fees for DevOps-ready teams.

Editor's takeKeycloak gives engineering teams full SSO, SAML and OAuth support without per-user licensing fees, and it has passed 30,000 GitHub stars with adopters like CERN and Accenture. Reviewers describe setup and high-availability clustering as a full-scale engineering project, and documentation is spread across community forums and Red Hat sites. It fits teams with DevOps depth, not those wanting a turnkey SaaS.