Best In-Memory Databases in 2026
Updated
In short: Amazon ElastiCache is ranked #1 of 25 as of 4 October 2026, ahead of Redis Insight and VoltDB. The best-ranked option with a free plan is Redis Insight. The lowest first paid tier on this page is GridGain at $0.11/mo.
In-memory databases are designed for workloads that rely on data held in memory, and the options vary in their data capabilities and deployment choices. Compare data persistence, high availability, included memory, and deployment, then look at SQL support, supported data models, and vector search. Free-plan availability and paid-from pricing are additional factors to consider. The ranking begins with Amazon ElastiCache, KeyDB, and Redis Insight, followed by VoltDB and Aerospike Database. Weigh the listed characteristics against the needs of your application, including the data models and availability features you require and how you expect to deploy and manage the database.
25 in-memory databases ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
In-Memory Databases in tiers by the score this site gives them, S at the top. 2 of the 25 on this page have an Android app.
- 6 Apache GeodeFree 6.9
- 7 SingleStore Helios$0.99/mo 6.9
- 8 RonDBFree 6.8
- 9 InfinispanFree 6.7
- 10 KeyDB 6.6
- 11 eXtremeDBAndroid 6.5
- 12 GridGain$0.11/mo 6.4
- 13 Dragonfly$36/mo 6.1
- 14 RaimaDBAndroid 6.0
- 15 SAP Customer Data Platform 6.0
- 16 Tarantool DB 6.0
- 17 DiceDB 5.7
- 18 ScaleOut In-Memory Database 5.7
- 19 Couchbase Server 5.6
- 20 ALTIBASE 5.4
- 21 Valkey 5.3
- 22 Erlang Debugger 5.2
- 23 Amazon MemoryDB 5.0
- 24 VMware Tanzu Platform 4.9
- 25 Apache Ignite 4.8
Is your app on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which in-memory database is ranked first on Everything Xiaomi?
Amazon ElastiCache is ranked #1 of 25 with a score of 7.3. Redis Insight is second and VoltDB third.
How many of these have a free plan?
9 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, GridGain has the lowest first paid tier we found: $0.11/mo.
How is this list ranked?
Ranked on what each maker publishes: documentation depth, a free tier and the platforms it runs on. Paid placements never change a rank.