18.1
SingleStore Helios is a cloud database-as-a-service available on AWS, Google Cloud, and Microsoft Azure.
Free planWebAPILinux
Best In-Memory Databases in 2026
If your application relies on data held in memory, compare database options by both data handling and operational needs. Persistence, deployment, high availability, and included memory offer one set of considerations; SQL support, supported data models, and vector search add another. Free-plan availability and paid-from pricing provide cost context. Amazon ElastiCache, Redis Insight, and VoltDB are among the entries…
27.9
Amazon ElastiCache is a managed caching service compatible with Valkey, Memcached, and Redis OSS.
Free planWebAPILinux
37.8
Aerospike Database is a real-time database designed for millisecond latency and large-scale transaction processing, including document access and graph traversal.
Free planOpen sourceWebAPILinux
- 4
VoltDB
VoltDB is a distributed, in-memory database and real-time decisioning layer for processing data, ingesting streams, running business logic, and integrating AI.
Free planOpen sourceWebAPILinuxmacOS7.6Free plan - 5
Apache Ignite
Apache Ignite is an open-source, memory-first distributed SQL database for high-velocity workloads.
Free planOpen sourceAPILinuxmacOSSelf-hosted7.4Free plan - 6
Apache Geode
Apache Geode is a data management platform for applications that need real-time, consistent access to data across distributed cloud architectures.
Free planOpen sourceAPILinuxmacOSSelf-hosted7.2Free plan - 7
Redis Insight
Redis Insight is a free developer tool for working with Redis through a graphical interface and command line.
Free planWebLinuxmacOSSelf-hosted6.7Free plan - 8
RaimaDB
RaimaDB is an embedded database for mission-critical applications, including edge, IoT, and real-time systems.
AndroidiOSWebAPI6.6 - 9
GridGain
GridGain Platform is an in-memory computing platform for transactional, streaming, and analytical processing at scale.
APILinuxmacOSSelf-hosted6.5From $0.11 a month - 10
SAP HANA Cloud
Free planWebAPILinux6.4Free plan - 11
eXtremeDB
eXtremeDB is an in-memory database system designed for embedded devices and applications.
AndroidiOSAPILinux6.3 - 12
Valkey
Valkey is an open-source key/value datastore for caching, message queues, and use as a primary database.
Free planAPILinuxmacOSSelf-hosted6.2Free plan - 13
ALTIBASE
ALTIBASE is a relational database engine that combines in-memory and on-disk storage.
Free planLinuxSelf-hosted6.1Free plan - 14
Dragonfly
Dragonfly is an in-memory data store for real-time workloads such as caching, feature serving, message queues, and sorted-set leaderboards.
APILinuxSelf-hosted6.1From $36 a month - 15
Infinispan
Infinispan is an open-source distributed in-memory database that combines caching with full-text and vector search.
Free planAPILinuxSelf-hosted6.0Free plan - 16
RonDB
RonDB is an open-source distributed storage engine for real-time applications, and a fork of MySQL NDB Cluster.
Free planAPILinuxSelf-hosted6.0Free plan - 17
DiceDB
DiceDB is a free, open-source data structure server designed for Redis-compatible clients, SDKs, commands, tools, and workflows.
Free planLinuxmacOSSelf-hosted5.8Free plan - 18
Erlang Debugger
Erlang Debugger is a graphical tool for debugging and testing Erlang programs.
LinuxmacOSWindows5.8 - 19
KeyDB
KeyDB is a free, open-source, in-memory database that can also be used as a cache and message broker.
LinuxmacOSSelf-hosted5.8 - 20
Tarantool DB
Tarantool DB is paid, self-hosted NoSQL in-memory database software for high-load business systems and real-time digital services.
APILinuxmacOSSelf-hosted5.8 - 21
ScaleOut In-Memory Database
ScaleOut In-Memory Database combines ScaleOut’s cluster architecture with Redis for enterprise Redis deployments.
APILinuxSelf-hostedWindows5.6 - 22
Amazon MemoryDB
Amazon MemoryDB is a paid, cloud-deployed durable in-memory database compatible with Valkey and Redis OSS.
WebAPI5.5 - 235.4
- 24
VMware Tanzu Platform
VMware Tanzu Platform is a self-hosted platform as a service for delivering and managing applications.
WebAPISelf-hosted5.4 - 254.7