Java Microservices

Open-source Java projects categorized as Microservices

Top 23 Java Microservice Projects

  • apollo

    Apollo is a reliable configuration management system suitable for microservice configuration management scenarios. (by apolloconfig)

    Project mention: Apollo – Reliable configuration management system | | 2022-02-11
  • Nacos

    an easy-to-use dynamic service discovery, configuration and service management platform for building cloud native applications.

    Project mention: a tool for quickly creating web and microservice code | | 2022-12-15

    Configuration Center nacos

  • Sonar

    Write Clean Java Code. Always.. Sonar helps you commit clean code every time. With over 600 unique rules to find Java bugs, code smells & vulnerabilities, Sonar finds the issues while you focus on the work.

  • Sentinel

    A powerful flow control component enabling reliability, resilience and monitoring for microservices. (面向云原生微服务的高可用流控防护组件)

  • Thingsboard

    Open-source IoT Platform - Device management, data collection, processing and visualization.

    Project mention: Sites to download source code from? (Leaked or not) | | 2023-01-13
  • jib

    🏗 Build container images for your Java applications.

    Project mention: Where do you host Spring Boot apps? | | 2022-12-04

    I run everything with docker compose. Traefik has a nice documentation, which is helpful for setting it up. You basically run the container and add some labels in your other containers (eg spring boot app) for specifying the domain name, container running port etc. And for the spring boot projects I am using jib for building the docker images and deploying them to a private registry (

  • piggymetrics

    Microservice Architecture with Spring Boot, Spring Cloud and Docker

    Project mention: Open source projects with Spring Boot microservices good prectices | | 2023-01-25
  • Activiti

    Activiti is a light-weight workflow and Business Process Management (BPM) Platform targeted at business people, developers and system admins. Its core is a super-fast and rock-solid BPMN 2 process engine for Java. It's open-source and distributed under the Apache license. Activiti runs in any Java application, on a server, on a cluster or in the cloud. It integrates perfectly with Spring, it is extremely lightweight and based on simple concepts.

    Project mention: Activiti VS javactrl-kafka - a user suggested alternative | | 2023-02-02
  • InfluxDB

    Build time-series-based applications quickly and at scale.. InfluxDB is the Time Series Platform where developers build real-time applications for analytics, IoT and cloud-native services. Easy to start, it is available in the cloud or on-premises.

  • Karate

    Test Automation Made Simple

    Project mention: Need a fully local web alternative to Postman | | 2023-02-02

    - - - -

  • Micronaut

    Micronaut Application Framework

    Project mention: Top 5 Server-Side Frameworks for Kotlin in 2022: Micronaut | | 2023-01-15

    🥇 Spring Boot 🥈 Quarkus 🥉 Micronaut 🏅 Ktor 🏅 http4k

  • spring-cloud-netflix

    Integration with Netflix OSS components

    Project mention: Kubernetes Microservices on Azure with Cosmos DB | | 2022-06-09

    There's an open issue documenting this problem on Spring Cloud Netflix and Netflix Eureka.

  • Armeria

    Your go-to microservice framework for any situation, from the creator of Netty et al. You can build any type of microservice leveraging your favorite technologies, including gRPC, Thrift, Kotlin, Retrofit, Reactive Streams, Spring Boot and Dropwizard.

    Project mention: Evaluating Spring Boot, Quarkus, or Micronaut and why for Stargate v2 | | 2022-12-26

    OP doesn't seem to be aware of Armeria

  • spring-cloud-gateway

    A Gateway built on Spring Framework and Spring Boot providing routing and more.

    Project mention: SpringShell: Spring Core RCE 0-day Vulnerability | | 2022-03-31

    It doesn't help that is registered to an unaffiliated party and deceptively resembles the official

  • micrometer

    An application metrics facade for the most popular monitoring tools. Think SLF4J, but for metrics.

    Project mention: 🎀 Spring Boot 2.7.0 Released | | 2022-06-21

    Micrometer 1.9

  • spring-cloud-kubernetes

    Kubernetes integration with Spring Cloud Discovery Client, Configuration, etc...

  • zeebe

    Distributed Workflow Engine for Microservices Orchestration

    Project mention: Camunda's Hacktoberfest 2022 | | 2022-10-04


  • spring-cloud-config

    External configuration (server and client) for Spring Cloud

  • gravitee-api-management - OpenSource API Management (by gravitee-io)

    Project mention: What is API Management and how it helps you get the most out of your APIs | | 2022-06-16

    Gravitee is a fully open source, low code, highly customisable API management platform, with a highly performant API gateway. It is a Java based product using the Vert.x framework. It uses the concepts of plugins to manage policies, including security, data transformation, protocol mediation, monitoring, authentication, performance and so forth. There are over 100 plugins available, and should you happen to not find the one you’re looking for, you can write your own.

  • spring-petclinic-microservices

    Distributed version of Spring Petclinic built with Spring Cloud

    Project mention: Skipping rendering engines | | 2022-09-15
  • spring-boot-jwt

    JWT auth service using Spring Boot, Spring Security and MySQL

    Project mention: Detailed guide to implement JWT in Spring Boot | | 2022-03-02


  • mycollab

    An open source, free, high performance, stable and secure Java Application Business Platform of Project Management and Document

  • Microserver

    Microserver is a Java 8 native, zero configuration, standards based, battle hardened library to run Java Rest Microservices via a standard Java main class. Supporting pure Microservice or Micro-monolith styles.

  • Nakadi

    A distributed event bus that implements a RESTful API abstraction on top of Kafka-like queues

  • spring-testing

    A Spring Boot application with lots of test examples

    Project mention: Any examples of a well designed Java web backend? | | 2022-11-19

    This is my filtered list of open-source projects that I use for learning:

  • SaaSHub

    SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

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). The latest post mention was on 2023-02-02.

Java Microservices related posts


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

Project Stars
1 apollo 27,696
2 Nacos 25,239
3 Sentinel 20,472
4 Thingsboard 13,008
5 jib 12,478
6 piggymetrics 12,117
7 Activiti 9,183
8 Karate 6,714
9 Micronaut 5,582
10 spring-cloud-netflix 4,684
11 Armeria 4,111
12 spring-cloud-gateway 3,873
13 micrometer 3,756
14 spring-cloud-kubernetes 3,213
15 zeebe 2,637
16 spring-cloud-config 1,856
17 gravitee-api-management 1,564
18 spring-petclinic-microservices 1,294
19 spring-boot-jwt 1,218
20 mycollab 1,171
21 Microserver 934
22 Nakadi 871
23 spring-testing 852
SaaSHub - Software Alternatives and Reviews
SaaSHub helps you find the best software and product alternatives