FusionAuth vs Keycloak: Pricing and Ratings Compared (2026)
Entry prices and free plans as read on each vendor's pricing page, and user ratings as published on review sites, for FusionAuth and Keycloak side by side. This page compares data; it is not a hands-on review.
On the data: On the data below the two are close or not directly comparable, so we do not name a winner for this pair.
Short on time? Here's the quick answer
Based on published vendor pricing and features and on public review data, here's who should pick what:
FusionAuth
Customer identity and access management
Best for you if:
- • You want self-hosted auth
Keycloak
Open-source identity and access management
Best for you if:
- • You want a fully free tool (FusionAuth requires payment)
| At a Glance | FusionAuth | |
|---|---|---|
Starts at | Free plan, paid from $162/mo flat, billed monthly Starter plan | Free 100% free |
Category | Identity & Access Security | Identity & Access Security |
Rating | 4.6/5 G2 4.5 · SourceForge 4.7 161 reviews | n/a |
Free plan | Yes | Yes |
Choose FusionAuth or Keycloak?
Choose FusionAuth if
- You want self-hosted auth
- You want good features
Choose Keycloak if
- You want a fully free tool (FusionAuth requires payment)
- You want open source identity
- You want self-hostable
In-Depth Analysis
FusionAuth
Customer identity and access management
FusionAuth offers a generous free Community tier, making it highly accessible.
Strengths
- Pro: Self-hosted auth
- Pro: Good features
- Pro: SSO support
- Pro: Fair pricing
- Pro: Good documentation
Weaknesses
- Con: Self-hosting complexity
- Con: Learning curve
- Con: Enterprise expensive
- Con: Smaller than Auth0
- Con: Community smaller
Key features
Keycloak
Open-source identity and access management
Keycloak's pricing is exceptionally generous, being entirely free as an open-source solution.
Strengths
- Pro: Open source identity
- Pro: Self-hostable
- Pro: Feature rich
- Pro: No per-user cost
- Pro: Enterprise ready
Weaknesses
- Con: Complex to set up
- Con: Requires maintenance
- Con: Learning curve
- Con: Java-based
- Con: UI dated
Key features
Plans and prices: FusionAuth vs Keycloak
| Tool | Plans and prices | Source |
|---|---|---|
| FusionAuth |
| fusionauth.io/pricing read Nov 2, 2026 |
| Keycloak |
| keycloak.org read Sep 28, 2026 |
Prices as read on each vendor's own pricing page on the date shown. Plans are listed per tool and are not matched against the other tool's plans: a plan name or price in one column says nothing about the same row in the other. Details on FusionAuth pricing and Keycloak pricing.
Key Takeaways
FusionAuth
- Choose if you want customer identity and access management
Keycloak
- Choose if you want open-source identity and access management
What the data shows
On the data below the two are close or not directly comparable, so we do not name a winner for this pair.
- Only FusionAuth has a published user rating (4.6/5 from 161 reviews); Keycloak has none we can show.
- FusionAuth starts at $162/mo flat, billed monthly; Keycloak has no public paid plan price on file.
- Both have a free plan.
Criteria: user rating (only above 20 reviews on both sides, gap of 0.2 or more), entry price (only on the same billing basis), free plan. How we rate
Frequently Asked Questions
How do FusionAuth and Keycloak compare in 2026?
On the data below the two are close or not directly comparable, so we do not name a winner for this pair. Only FusionAuth has a published user rating (4.6/5 from 161 reviews); Keycloak has none we can show. FusionAuth starts at $162/mo flat, billed monthly; Keycloak has no public paid plan price on file. Both have a free plan.
What are FusionAuth and Keycloak used for?
FusionAuth: Customer identity and access management. Keycloak: Open-source identity and access management.
What does FusionAuth cost vs Keycloak?
FusionAuth's cheapest paid plan is Starter at $162/mo flat, billed monthly; it also has a free plan. Keycloak is free. Prices read on the vendors' pricing pages, latest check Nov 2, 2026.
What's the main difference between FusionAuth and Keycloak?
FusionAuth's main strength: self-hosted auth. Keycloak's main strength: open source identity.