toolgrep / Auth & identity / Cisco Duo
Alternatives to Cisco Duo
Cisco Duo: IAM & MFA identity security for business, humans, and AI. 8 products similar to Cisco Duo, compared on pricing, free tier, API, MCP server, SDK and open source. 8 of 8 have a free tier, 7 of 8 have an API, 4 of 8 offer an MCP server, 3 of 8 are open source.
- Auth0
Secure AI Agent & User Authentication
- Protectimus
Two-factor authentication platform available as a cloud MFA service and on-premises, based on OATH standards.
- ZITADEL
Identity infrastructure, simplified
- Frontegg
The Identity Layer for Every SaaS Entry Point
- Asgardeo
Auth for Modern Apps
- Authgear
Open-source auth and user management for consumer and frontline identity
- Descope
Customer and agentic identity platform for authentication, access control, and identity management
- Authy
Two-factor authentication (2FA) app
Side by side
| Product | Pricing | Free tier | API | MCP server | SDK | Open source |
|---|---|---|---|---|---|---|
| Cisco Duo | Freemium | yes | yes | no | yes | no |
| Auth0 | Freemium | yes | yes | yes | yes | no |
| Protectimus | Freemium | yes | yes | no | yes | no |
| ZITADEL | Freemium · from US$ 0 | yes | yes | no | yes | yes |
| Frontegg | Freemium | yes | yes | yes | yes | no |
| Asgardeo | Freemium | yes | yes | no | yes | yes |
| Authgear | Freemium · from $0/month | yes | yes | yes | yes | yes |
| Descope | Freemium | yes | yes | yes | yes | no |
| Authy | Free | yes | no | no | no | no |
Facts come from each product's own website, or from its verified owner when they have edited the listing. Each product page shows when it was last verified and how it was extracted. Similarity comes from the products' descriptions.
API
curl https://toolgrep.com/api/products/cisco-duo/alternatives