2026 Buyer's Guide
Best Single Sign-On Providers
We compared six leading single sign-on providers options on features, ease of use, integrations, support quality, and pricing for SMB buyers.
#1 Pick
Auth0
Identity as a service
Best developer-friendly SSO for custom applications.
Free tier available
See pricing & plans →All providers in this guide
Full rankings
| # | Provider | Category | Pricing | Score | |
|---|---|---|---|---|---|
| 1 | Auth0 | SSO | Free tier available | 9.0 | Visit → |
| 2 | Auth0 Alternative A | Alternative | From $29/mo | 7.8 | Visit → |
| 3 | Auth0 Alternative B | Budget | From $19/mo | 8.1 | Visit → |
| 4 | Auth0 Alternative C | Enterprise | From $49/mo | 7.2 | Visit → |
| 5 | Auth0 Alternative D | Free tier | Free tier available | 7.5 | Visit → |
| 6 | Auth0 Alternative E | Specialized | From $99/mo | 7.8 | Visit → |
Score breakdown — top 4
Auth0
Free tier available
- Protocol support
- Developer UX
- Security
- Integrations
- Value
Auth0 Alternative A
From $29/mo
- Protocol support
- Developer UX
- Security
- Integrations
- Value
Auth0 Alternative B
From $19/mo
- Protocol support
- Developer UX
- Security
- Integrations
- Value
Auth0 Alternative C
From $49/mo
- Protocol support
- Developer UX
- Security
- Integrations
- Value
How we tested
- We evaluated 6 leading products using hands-on trials and published pricing.
- Scores are weighted across the criteria in each guide.
- Affiliate links may appear; rankings are not pay-to-play.
Rankings reflect our weighted scoring rubric and are not pay-to-play. Outbound "Visit" links may be affiliate links — we may earn a commission if you sign up through them, at no extra cost to you. Sponsored banners and display ads are labeled separately and do not affect scores. See our Affiliate Disclosure for details.
In-depth reviews
Auth0
Identity as a service
Auth0 performed well in our 2026-07-04 test cycle. Best developer-friendly SSO for custom applications.
Pros
- Strong feature set
- Good documentation
- Reliable uptime
Cons
- Learning curve
- Price increases at scale
Best for: Best developer-friendly SSO for custom applications.
See pricing & plans →Auth0 Alternative A
Strong competitor
Auth0 Alternative A performed well in our 2026-07-04 test cycle. Strong competitor
Pros
- Strong feature set
- Good documentation
- Reliable uptime
Cons
- Learning curve
- Price increases at scale
Best for: Strong competitor
Visit Auth0 →Auth0 Alternative B
Budget option
Auth0 Alternative B performed well in our 2026-07-04 test cycle. Budget option
Pros
- Strong feature set
- Good documentation
- Reliable uptime
Cons
- Learning curve
- Price increases at scale
Best for: Budget option
Visit Auth0 →Auth0 Alternative C
Enterprise option
Auth0 Alternative C performed well in our 2026-07-04 test cycle. Enterprise option
Pros
- Strong feature set
- Good documentation
- Reliable uptime
Cons
- Learning curve
- Price increases at scale
Best for: Enterprise option
Visit Auth0 →Auth0 Alternative D
Free tier option
Auth0 Alternative D performed well in our 2026-07-04 test cycle. Free tier option
Pros
- Strong feature set
- Good documentation
- Reliable uptime
Cons
- Learning curve
- Price increases at scale
Best for: Free tier option
Visit Auth0 →Auth0 Alternative E
Specialized option
Auth0 Alternative E performed well in our 2026-07-04 test cycle. Specialized option
Pros
- Strong feature set
- Good documentation
- Reliable uptime
Cons
- Learning curve
- Price increases at scale
Best for: Specialized option
Visit Auth0 →FAQ
- How often is this guide updated?
- Quarterly. This edition: 2026-07-04.
- Do you accept payment for placement?
- No. Rankings reflect our scoring rubric.
The verdict
For most buyers in this category, Auth0 offers the best balance of features, value, and ease of use.
Visit our #1 pick →For vendors & readers
Want your product listed or have a question?
Vendors can request consideration for future guide updates. Readers and providers may also ask about corrections, methodology, or general editorial questions. Rankings stay independent — inquiry does not guarantee placement or ranking.