SingleStore Helios
by SingleStore HeliosHelios suits teams that need a cloud database for transactional and analytical work, with multiple data models or AI workloads.
Free plan Free trial WebWindowsMacLinuxAPISelf-hosted
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Best In-Memory Databases 2026
Facts read 20 Sep 2026 – 19 Oct 2026
When an application relies on data held in memory, the database choice affects both data handling and operational fit. Compared on data persistence, deployment, high availability, and included memory, these entries also distinguish themselves through SQL support, supported data models, and vector search. Free-plan availability and paid-from pricing add cost details to weigh alongside those capabilities. eXtremeDB, Aerospike Database, and Infinispan are among the products to consider as you compare approaches. Think about the persistence and availability your workload calls for, which data models and query features it needs, and where you expect to deploy. The listed criteria offer a way to compare those needs without treating any single capability as decisive.
The standings: top 10
| Name | In a line | Record score | Price from | Try it free | Runs on | Facts read |
|---|---|---|---|---|---|---|
| 01 SingleStore Helios | Helios suits teams that need a cloud database for transactional and analytical work, with multiple data models or AI workloads. | 6.0 | Free plan | Free plan | Web, Windows, Mac, Linux | 15 Oct 2026 |
| 02 Amazon ElastiCache | ElastiCache suits teams seeking managed caching for applications, data stores, sessions, or leaderboards. | 5.7 | $6 a month | Free plan | Web, Windows, Mac, Linux | 15 Oct 2026 |
| 03 VoltDB | VoltDB is aimed at companies building or modernizing mission-critical applications, including in financial services, telecommunications, and enterprise technology. | 5.7 | Free plan | Free plan | Web, Mac, Linux, API | 19 Oct 2026 |
| 04 Aerospike Database | Aerospike Database suits teams building transaction systems or data pipelines that need key-value, document or graph data models. | 5.6 | Free plan | Free plan | Web, Windows, Mac, Linux | 19 Oct 2026 |
| 05 Apache Geode | It suits developers and enterprise teams building high-scale applications that need low latency and high availability. | 5.1 | Free plan | Free plan | Windows, Mac, Linux, API | 15 Oct 2026 |
| 06 Apache Ignite | It suits teams building high-velocity data applications that need distributed SQL, transactions, or streaming writes. | 5.1 | Free plan | Free plan | Windows, Mac, Linux, API | 15 Oct 2026 |
| 07 GridGain | 5.1 | $0.53 a month | Free trial | Windows, Mac, Linux, API | 29 Sep 2026 | |
| 08 RaimaDB | RaimaDB suits teams building embedded, edge, IoT, or real-time systems that need transactional storage. | 5.0 | — | Free trial | Android, iPhone & iPad, Web, Windows | 8 Oct 2026 |
| 09 Redis Insight | Redis Insight is suited to developers and administrators who work with Redis data and want GUI and command-line tools for inspection and management. | 4.9 | Free plan | Free plan | Web, Windows, Mac, Linux | 2 Oct 2026 |
| 10 SAP HANA Cloud | 4.9 | Free plan | Free plan | Web, Linux, API | 11 Oct 2026 |
02
Amazon ElastiCache
ElastiCache suits teams seeking managed caching for applications, data stores, sessions, or leaderboards.
WebWindowsMac+2 Record5.7 Visit
03
VoltDB
VoltDB is aimed at companies building or modernizing mission-critical applications, including in financial services, telecommunications, and enterprise technology.
WebMacLinux+2 Record5.7 Visit
04
Aerospike Database
Aerospike Database suits teams building transaction systems or data pipelines that need key-value, document or graph data models.
WebWindowsMac+3 Record5.6 Visit
05
Apache Geode
It suits developers and enterprise teams building high-scale applications that need low latency and high availability.
WindowsMacLinux+2 Record5.1 Visit
6
Apache Ignite
WindowsMacLinux+2 Free plan Record5.1 Visit It suits teams building high-velocity data applications that need distributed SQL, transactions, or streaming writes.
8
RaimaDB
AndroidiPhone & iPadWeb+5 — Record5.0 Visit RaimaDB suits teams building embedded, edge, IoT, or real-time systems that need transactional storage.
9
Redis Insight
WebWindowsMac+2 Free plan Record4.9 Visit Redis Insight is suited to developers and administrators who work with Redis data and want GUI and command-line tools for inspection and management.
11
eXtremeDB
AndroidiPhone & iPadWindows+4 — Record4.6 Visit eXtremeDB suits developers building embedded applications or devices that need in-memory and persistent storage.
12
ALTIBASE
LinuxSelf-hosted Free plan Record4.5 Visit ALTIBASE may suit teams seeking a Linux-based database with in-memory, on-disk, or hybrid deployment and replication options.
13
Valkey
MacLinuxAPI+1 Free plan Record4.5 Visit Valkey suits teams building caching, messaging, or database workloads that want a self-hosted key/value datastore.
15
RonDB
LinuxAPISelf-hosted Free plan Record4.4 Visit RonDB suits developers building real-time applications, including machine-learning feature-store workloads.
17
DiceDB
MacLinuxSelf-hosted Free plan Record4.2 Visit DiceDB suits developers and operators looking for a free, Redis-compatible data structure server with query subscriptions and optional storage tiering.
18
Infinispan
LinuxAPISelf-hosted Free plan Record4.2 Visit Infinispan may suit developers and teams building applications that need distributed in-memory data, search, and caching.
20
Erlang Debugger
WindowsMacLinux Free Record4.0 Visit It suits Erlang developers familiar with the language who need local or remote process inspection on Linux, macOS, or Windows.
23
VMware Tanzu Platform
WebAPISelf-hosted — Record3.3 Visit It suits application and platform engineering teams that need shared governance and visibility while delivering applications.
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