18.1
TiDB Cloud is a managed cloud database service built around an open-source distributed SQL database with MySQL compatibility.
Free planOpen sourceWebAPILinux
Best Distributed Systems in 2026
27.8
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
37.8
Free planOpen sourceWebAPILinux
- 4
Apache Cassandra
Apache Cassandra is an open-source NoSQL distributed database for mission-critical data and large active datasets.
Free planOpen sourceWebAPILinuxmacOS7.7Free plan - 5
Apache RocketMQ
Apache RocketMQ is distributed middleware for asynchronous communication and publish/subscribe messaging.
Free planOpen sourceAPILinuxmacOSSelf-hosted7.5Free plan - 6
Honeycomb
Honeycomb is an observability platform for debugging systems, application code and databases with structured telemetry.
Free planAndroidiOSWebAPI7.5From $150 a month - 7
Kuma
Kuma is a free, open-source control plane for managing service meshes and microservices.
Free planOpen sourceWebAPILinuxmacOS7.5Free plan - 8
Apache Ignite
Apache Ignite is an open-source, memory-first distributed SQL database for high-velocity workloads.
Free planOpen sourceAPILinuxmacOSSelf-hosted7.4Free plan - 9
Redpanda
Free planWebAPILinuxmacOS7.4Free plan - 10
CockroachDB Cloud
CockroachDB Cloud is a fully managed distributed SQL platform for workloads ranging from development and testing to production applications.
Free planWebAPILinux7.1Free plan - 11
Temporal
WebAPILinuxmacOS6.8From $500 a month - 12
Jaeger
Jaeger is a free, open-source platform for distributed tracing in complex systems.
Free planWebAPILinuxmacOS6.6Free plan - 13
YugabyteDB Anywhere
YugabyteDB Anywhere (YBA) is a self-managed database-as-a-service for deploying and operating YugabyteDB universes.
Free planWebAPILinuxSelf-hosted6.5Free plan - 14
Apache Pulsar
Apache Pulsar is an open-source distributed messaging and streaming platform built for cloud use.
Free planAPILinuxmacOSSelf-hosted6.3Free plan - 15
etcd
etcd is a free, self-hosted key-value store for data used by distributed systems and clusters of machines.
Free planAPILinuxmacOSSelf-hosted6.3Free plan - 16
Istio
Istio is a free, open-source service mesh for securing, connecting, and monitoring distributed applications with few or no service-code changes.
Free planLinuxmacOSSelf-hosted6.2Free plan - 17
YDB
Free planAPILinuxSelf-hosted6.2Free plan - 18
Apache Flink
Apache Flink is a framework and distributed processing engine for stateful computations over bounded and unbounded data streams.
Free planAPILinuxSelf-hosted6.1Free plan - 19
FoundationDB
FoundationDB is a free, open-source distributed database that stores structured data as an ordered key-value store across clusters of commodity servers.
APILinuxmacOSSelf-hosted6.1 - 20
OpenZipkin
OpenZipkin is the open-source organization that stewards Zipkin code, documentation, specifications, and support; Zipkin was originally created at Twitter.
Free planWebSelf-hosted6.1Free plan - 21
Apache Kafka
Free planAPISelf-hosted6.0Free plan - 22
Cilium
Cilium is open-source software for providing, securing, and observing network connectivity between workloads, using eBPF.
Free planLinuxSelf-hosted6.0Free plan - 23
NATS
NATS is a free, open-source messaging system for building distributed systems across clouds and user-defined edge environments.
Free planAPILinuxSelf-hosted6.0Free plan - 24
Linkerd
Linkerd is a free, open-source service mesh for Kubernetes that adds runtime debugging, observability, reliability, and security without requiring…
Free planLinuxSelf-hosted5.9Free plan - 25
Apache Doris
Apache Doris is an open-source, real-time analytical database for analytics and AI, available under the Apache License, Version 2.0.
APILinuxSelf-hosted5.8