Top 9 C++ Microservice Projects

redpanda

1 72 10,563 10.0 C++

Redpanda is a streaming data platform for developers. Kafka API compatible. 10x faster. No ZooKeeper. No JVM!

Project mention: Twitter's 600-Tweet Daily Limit Crisis: Soaring GCP Costs and the Open Source Fix Elon Musk Ignored | dev.to | 2025-04-10

Redpanda: Redpanda is a straightforward, high-throughput, and cost-efficient messaging service. It is implemented in C++, compatible with Kafka, and claims to be 6 times more cost-effective than Kafka while achieving 10 times faster performance.
InfluxDB

www.influxdata.com featured

InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
Oat++

2 24 8,320 6.6 C++

🌱Light and powerful C++ web framework for highly scalable and resource-efficient web application. It's zero-dependency and easy-portable.

Project mention: Serving Static Files and Single Page Applications on Oat++ (OatPP) | dev.to | 2024-07-23

Oat++(OatPP) is a lightweight C++ Web framework. Out of the box, it provides REST API with built-in JSON serialization/deserialization features, which could be interfaced with your DTOs.
service-fabric

3 4 3,047 7.0 C++

Service Fabric is a distributed systems platform for packaging, deploying, and managing stateless and stateful distributed applications and containers at large scale.
userver

4 5 2,652 9.9 C++

Production-ready C++ Asynchronous Framework with rich functionality

Project mention: Userver 2.10 Released | news.ycombinator.com | 2025-06-11
CppMicroServices

5 1 845 8.3 C++

An OSGi-like C++ dynamic module system and service registry
microservices-framework-benchmark

6 2 711 6.9 C++

Raw benchmarks on throughput, latency and transfer of Hello World on popular microservices frameworks
qb

7 2 64 8.8 C++

Modern C++17 actor-based framework for building high-performance concurrent and distributed systems. Features asynchronous I/O, lock-free messaging, cross-platform support (Linux/macOS/Windows), and multi-core scaling. Perfect for real-time applications, microservices, and network servers. (by isndev)

Project mention: Meet `qb`: The High-Performance C++17 Actor Framework You've Been Waiting For | dev.to | 2025-06-10

GitHub: https://github.com/isndev/qb
Stream

getstream.io featured

Stream - Scalable APIs for Chat, Feeds, Moderation, & Video. Stream helps developers build engaging apps that scale to millions with performant and flexible Chat, Feeds, Moderation, and Video APIs and SDKs powered by a global edge network and enterprise-grade infrastructure.
example-postgresql

8 1 40 0.0 C++

A complete example of a "CRUD" service (UserService) built with Oat++ and using oatpp ORM with PostgreSQL.
CXXMicroService

9 4 16 0.0 C++

A C++ Library that give microservice framework ( Server / Client ) upon 0mq framework

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).

C++ Microservices discussion

Index

What are some of the best open-source Microservice projects in C++? This list will help you:

#	Project	Stars
1	redpanda	10,563
2	Oat++	8,320
3	service-fabric	3,047
4	userver	2,652
5	CppMicroServices	845
6	microservices-framework-benchmark	711
7	qb	64
8	example-postgresql	40
9	CXXMicroService	16