Hazelcast vs KeyDB: 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 Hazelcast and KeyDB 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:
Hazelcast
Real-time data platform for streaming and memory
Best for you if:
- • You want ultra-low latency
KeyDB
The Faster Redis Alternative for high-throughput, low-latency data storage.
Best for you if:
- • You want a fully free tool (Hazelcast requires payment)
| At a Glance | Hazelcast | KeyDB |
|---|---|---|
Starts at | Free plan | Free 100% free |
Category | Data & Databases Developer Tools | Data & Databases Cloud & Infrastructure |
Rating | 4.5/5 G2 4.3 · Capterra 5.0 15 reviews | 3.7/5 G2 4.6 · SourceForge 2.5 16 reviews |
Free plan | Yes | Yes |
Choose Hazelcast or KeyDB?
Choose Hazelcast if
- You want ultra-low latency
- You want unified platform
Choose KeyDB if
- You want a fully free tool (Hazelcast requires payment)
- You want multi-threaded Redis
- You want redis compatible
In-Depth Analysis
Hazelcast
Real-time data platform for streaming and memory
Hazelcast's pricing model is fair, offering a robust open-source option at $0 and flexible enterprise solutions.
Strengths
- Pro: Ultra-low latency
- Pro: Unified platform
- Pro: Strong Java ecosystem
- Pro: Auto-scaling
Weaknesses
- Con: Complex configuration
- Con: Resource intensive
- Con: Steep learning curve
Key features
KeyDB
The Faster Redis Alternative for high-throughput, low-latency data storage.
KeyDB's pricing is quite generous with a robust free open-source tier offering significant features.
Strengths
- Pro: Multi-threaded Redis
- Pro: Redis compatible
- Pro: Better performance
- Pro: Open source
- Pro: Active replication
Weaknesses
- Con: Less ecosystem than Redis
- Con: Smaller community
- Con: Documentation gaps
- Con: Production concerns
- Con: Less support
Key features
Plans and prices: Hazelcast vs KeyDB
| Tool | Plans and prices | Source |
|---|---|---|
| Hazelcast |
| hazelcast.com/pricing read Oct 7, 2026 |
| KeyDB |
| keydb.dev read Sep 30, 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 Hazelcast pricing and KeyDB pricing.
Key Takeaways
Hazelcast
- Choose if you want real-time data platform for streaming and memory
KeyDB
- Choose if you want the Faster Redis Alternative for high-throughput, low-latency data storage
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.
- User ratings rest on too few reviews to rank (4.5/5 from 15 reviews for Hazelcast, 3.7/5 from 16 reviews for KeyDB; we compare ratings only above 20 reviews on both sides).
- 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 Hazelcast and KeyDB 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. User ratings rest on too few reviews to rank (4.5/5 from 15 reviews for Hazelcast, 3.7/5 from 16 reviews for KeyDB; we compare ratings only above 20 reviews on both sides). Both have a free plan.
What are Hazelcast and KeyDB used for?
Hazelcast: Real-time data platform for streaming and memory. KeyDB: The Faster Redis Alternative for high-throughput, low-latency data storage.
What does Hazelcast cost vs KeyDB?
Hazelcast has no public paid-plan price on file. KeyDB is free. Prices read on the vendors' pricing pages, latest check Oct 7, 2026.
What's the main difference between Hazelcast and KeyDB?
Hazelcast's main strength: ultra-low latency. KeyDB's main strength: multi-threaded Redis.