- [Spring Cloud Netflix](https://github.com/spring-cloud/spring-cloud-netflix) - Provides Netflix OSS integrations for Spring Boot apps through autoconfiguration and binding to the Spring Environment and other Spring programming model idioms.
- [Akka](http://akka.io/) - Toolkit and runtime for building highly concurrent, distributed, and resilient message-driven applications on the JVM.
- [Erlang/OTP](http://www.erlang.org/doc/design_principles/users_guide.html) - Programming language used to build massively scalable soft real-time systems with requirements on high availability.
- [Karaf](http://karaf.apache.org/) - Small OSGi based runtime which provides a lightweight container.
- [Karyon](https://github.com/Netflix/karyon) - The nucleus or the base container for applications and services built using the NetflixOSS ecosystem.
- [Microserver](https://github.com/aol/micro-server) - Java 8 native, zero configuration, standards based, battle hardened library to run Java REST microservices.
- [Orbit](http://orbit.bioware.com/) - Modern framework for JVM languages that makes it easier to build and maintain distributed and scalable online services.
- [Vert.X](http://vertx.io/) - Toolkit for building reactive applications on the JVM.
- [Compojure](https://github.com/weavejester/compojure) - A concise routing library for Ring/Clojure.
- [Duct](https://github.com/weavejester/duct) - Minimal framework for building web applications in Clojure, with a strong emphasis on simplicity.
- [Liberator](http://clojure-liberator.github.io/liberator/) - Library that helps you expose your data as resources while automatically complying with all the relevant requirements of the HTTP specification.
- [System](https://github.com/danielsz/system) - Built on top of Stuart Sierra's component library, offers a set of readymade components.
- [Tesla](https://github.com/otto-de/tesla-microservice) - Common basis for some of Otto.de's Clojure microservices.
#### Java
- [Airlift](https://github.com/airlift/airlift) - Framework for building REST services in Java.
- [Dropwizard](https://dropwizard.github.io/) - Java framework for developing ops-friendly, high-performance, RESTful web services.
- [Finagle](http://twitter.github.io/finagle) - Extensible RPC system for the JVM, used to construct high-concurrency servers.
- [Jersey](https://jersey.java.net/) - RESTful Web Services in Java. JAX-RS (JSR 311 & JSR 339) Reference Implementation.
- [Ratpack](http://ratpack.io/) - Set of Java libraries that facilitate fast, efficient, evolvable and well tested HTTP applications. specific support for the Groovy language is provided.
- [Restlet](http://restlet.com/) - Helps Java developers build web APIs that follow the REST architecture style.
- [Spring Boot](http://projects.spring.io/spring-boot/) - Makes it easy to create stand-alone, production-grade Spring based applications.
#### Scala
- [Colossus](https://github.com/tumblr/colossus) - I/O and microservice library for Scala.
- [Finatra](http://twitter.github.io/finatra/) - Fast, testable, Scala HTTP services built on Twitter-Server and Finagle.
- [Play](https://www.playframework.com/) - The high velocity web framework for Java and Scala.
- [Scalatra](http://www.scalatra.org/) - Simple, accessible and free web micro-framework.
- [Skinny Micro](https://github.com/skinny-framework/skinny-micro) - Micro-web framework to build servlet applications in Scala.
- [Spray](http://spray.io/) - Open-source toolkit for building REST/HTTP-based integration layers on top of Scala and Akka.
### C
- [Kore](https://kore.io/) - Easy to use web application framework for writing scalable web APIs in C.
- [RIBS2](https://github.com/Adaptv/ribs2) - Library which allows building high-performance internet serving systems.
### C++
<!-- #c-1 anchor -->
- [AnyRPC](https://github.com/sgieseking/anyrpc) - Provides a common system to work with a number of different remote procedure call standards, including: JSON-RPC, XML-RPC, MessagePack-RPC.
- [C++ Micro Services](http://cppmicroservices.org/) - An OSGi-like C++ dynamic module system and service registry.
### D
- [Vibe.d](http://vibed.org/) - Asynchronous I/O that doesn’t get in your way, written in D.
### Erlang
- [Gen Microservice](https://github.com/videlalvaro/gen_microservice) - This library solves the problem of implementing microservices with Erlang.
- [Mochiweb](https://github.com/mochi/mochiweb) - Erlang library for building lightweight HTTP servers.
- [Camel](http://camel.apache.org/) - Empowers you to define routing and mediation rules in a variety of domain-specific languages, including a Java-based fluent API, Spring or Blueprint XML configuration files, and a Scala DSL.
- [HAProxy](http://www.haproxy.org/) - Reliable, high Performance TCP/HTTP load balancer.
- [Consul](https://consul.io/) - Service discovery and configuration made easy. Distributed, highly available, and datacenter-aware.
- [Denominator](https://github.com/Netflix/denominator) - Portably control DNS clouds using java or bash.
- [Etcd](https://github.com/coreos/etcd) - Highly-available key-value store for shared configuration and service discovery.
- [Eureka](https://github.com/Netflix/eureka/wiki/Eureka-at-a-glance) - REST based service that is primarily used in the AWS cloud for locating services for the purpose of load balancing and failover of middle-tier servers.
- [SkyDNS](https://github.com/skynetservices/skydns) - Distributed service for announcement and discovery of services built on top of etcd. It utilizes DNS queries to discover available services.
- [Spring Cloud Config](http://cloud.spring.io/spring-cloud-config/) - Provides server and client-side support for externalized configuration in a distributed system.
- [ZooKeeper](https://zookeeper.apache.org/) - Open-source server which enables highly reliable distributed coordination.
- [JWT](http://jwt.io/) - JSON Web Tokens are an open, industry standard RFC 7519 method for representing claims securely between two parties.
- [OAuth](http://oauth.net/2/) - Provides specific authorization flows for web applications, desktop applications, mobile phones, and living room devices. Many implementations.
- [OpenID Connect](http://openid.net/developers/libraries/) - Libraries, products, and tools implementing current OpenID specifications and related specs.
- [Vault](https://vaultproject.io/) - Secures, stores, and tightly controls access to tokens, passwords, certificates, API keys, and other secrets in modern computing.
- [Hazelcast](http://hazelcast.org/) - Open-source in-memory data-grid. Allows you to distribute data and computation across servers, clusters and geographies, and to manage very large data sets or high data ingest rates. Mature technology.
- [Ignite](https://ignite.incubator.apache.org/) - High-performance, integrated and distributed in-memory platform for computing and transacting on large-scale data sets in real-time, orders of magnitude faster than possible with traditional disk-based or flash technologies.
- [Marathon](https://mesosphere.github.io/marathon/) - Deploy and manage containers (including Docker) on top of Apache Mesos at scale.
- [Mesos](https://mesos.apache.org/) - Abstracts CPU, memory, storage, and other compute resources away from machines (physical or virtual), enabling fault-tolerant and elastic distributed systems to easily be built and run effectively.
- [Ordasity](https://github.com/boundary/ordasity) - Designed to spread persistent or long-lived workloads across several machines.
- [Redisson](https://github.com/mrniko/redisson) - Distributed and scalable Java data structures on top of Redis server.
- [Service Fabric](http://servicefabric.io/) - Fault-tolerant decentralized peer-to-peer based cluster membership service with no single point of failure.
- [Apollo](http://activemq.apache.org/apollo/) - Faster, more reliable, easier to maintain messaging broker built from the foundations of the original ActiveMQ.
- [BooPickle](https://github.com/ochrons/boopickle) - Binary serialization library for efficient network communication. For Scala and Scala.js
- [CBOR](http://cbor.io/) - Implementations of the CBOR standard (RFC 7049) in many languages.
- [Cereal](http://uscilab.github.io/cereal/) - C++11 library for serialization.
- [Cheshire](https://github.com/dakrone/cheshire) - Clojure JSON and JSON SMILE encoding/decoding.
- [Etch](http://etch.apache.org/) - Cross-platform, language and transport-independent framework for building and consuming network services.
- [Fastjson](https://github.com/alibaba/fastjson) - Fast JSON Processor.
- [FST](https://github.com/RuedigerMoeller/fast-serialization) - Fast java serialization drop in-replacemen.
- [Jackson](https://github.com/FasterXML/jackson) - A multi-purpose Java library for processing JSON data format.
- [Jackson Afterburner](https://github.com/FasterXML/jackson-module-afterburner) - Jackson module that uses bytecode generation to further speed up data binding (+30-40% throughput for serialization, deserialization).
- [Kryo](https://github.com/EsotericSoftware/kryo) - Java serialization and cloning: fast, efficient, automatic.
- [Protostuff](http://www.protostuff.io/) - A serialization library with built-in support for forward-backward compatibility (schema evolution) and validation.
- [SBinary](https://github.com/harrah/sbinary) - Library for describing binary formats for Scala types.
- [Thrift](http://thrift.apache.org/) - The Apache Thrift software framework, for scalable cross-language services development.
- [ReactiveX](http://reactivex.io/) - API for asynchronous programming with observable streams. Available for idiomatic Java, Scala, C#, C++, Clojure, JavaScript, Python, Groovy, JRuby, and others.
- [Hystrix](https://github.com/Netflix/Hystrix) - Latency and fault tolerance library designed to isolate points of access to remote systems, services and 3rd party libraries, stop cascading failure and enable resilience in complex distributed systems where failure is inevitable.
- [Raft Consensus](http://raftconsensus.github.io/) - Consensus algorithm that is designed to be easy to understand. It's equivalent to Paxos in fault-tolerance and performance.
- [Resilient HTTP](http://resilient-http.github.io/) - A smart HTTP client with super powers like fault tolerance, dynamic server discovery, auto balancing and reactive recovery, designed for distributed systems.
- [Simian Army](https://github.com/Netflix/SimianArmy) - Suite of tools for keeping your cloud operating in top form. Chaos Monkey, the first member, is a resiliency tool that helps ensure that your applications can tolerate random instance failures.
- [Terraform](https://terraform.io/) - Provides a common configuration to launch infrastructure, from physical and virtual servers to email and DNS providers.
- [AWS CodeDeploy](http://aws.amazon.com/codedeploy/) - Deployment service that enables developers to automate the deployment of applications to instances and to update the applications as required.
- [CoreOS](https://coreos.com/) - Open-source lightweight operating system based on the Linux kernel and designed for providing infrastructure to clustered deployments.
- [API Blueprint](https://apiblueprint.org/) - Tools for your whole API lifecycle. Use it to discuss your API with others. Generate documentation automatically. Or a test suite. Or even some code.
- [RAML](http://raml.org/) - RESTful API Modeling Language, a simple and succinct way of describing practically-RESTful APIs.
- [Swagger](http://swagger.io/) - A simple yet powerful representation of your RESTful API.
### Systems & SPLs
- [FAMILIAR](http://familiar-project.github.io/) - A language for importing, exporting, composing, decomposing, editing, configuring, computing "diffs", refactoring, reverse engineering, testing, and reasoning about feature models.
- [SoaML](http://www.omg.org/spec/SoaML/) - OMG Service Oriented Architecture Modeling Language.
- [SysML](http://www.omgsysml.org/) - OMG Systems Modeling Language.
- [Mountebank](http://www.mbtest.org/) - Cross-platform, multi-protocol test doubles over the wire.
- [VCR](https://github.com/vcr/vcr) - Record your test suite's HTTP interactions and replay them during future test runs for fast, deterministic, accurate tests. See the list of ports for implementations in other languages.
- [WireMock](http://wiremock.org/) - Flexible library for stubbing and mocking web services. Unlike general purpose mocking tools it works by creating an actual HTTP server that your code under test can connect to as it would a real web service.
- [BERT-RPC 1.0](http://bert-rpc.org/) - An attempt to specify a flexible binary serialization and RPC protocol that are compatible with the philosophies of dynamic languages.
- [RFC6749](http://tools.ietf.org/html/rfc6749) - The OAuth 2.0 authorization framework.
- [RFC7515](https://tools.ietf.org/html/rfc7515) - JSON Web Signature (JWS) represents content secured with digital signatures or Message Authentication Codes (MACs) using JSON-based data structures.
- [RFC7519](https://tools.ietf.org/html/rfc7519) - JSON Web Token (JWT) is a compact, URL-safe means of representing claims to be transferred between two parties.
- [OIDCONN](http://openid.net/connect/) - OpenID Connect 1.0 is a simple identity layer on top of the OAuth 2.0 protocol. It allows clients to verify the identity of the end-user based on the authentication performed by an Authorization Server, as well as to obtain basic profile information about the end-user in an interoperable and REST-like manner.
- [HAL-DRAFT](https://tools.ietf.org/html/draft-kelly-json-hal-07) - The JSON Hypertext Application Language (HAL) is a standard which establishes conventions for expressing hypermedia controls, such as links, with JSON. <sup>DRAFT</sup>
- [UNIV8](http://www.unicode.org/versions/Unicode8.0.0/) - The Unicode Consortium. The Unicode Standard, Version 8.0.0, (Mountain View, CA: The Unicode Consortium, 2015. ISBN 978-1-936213-10-8).
- [RFC3629](https://tools.ietf.org/html/rfc3629) - UTF-8, a transformation format of ISO 10646.
- [AKF Scale Cube](http://akfpartners.com/techblog/2008/05/08/splitting-applications-or-services-for-scale/) - Model depicting the dimensions to scale a service.
- [Canary Release](http://martinfowler.com/bliki/CanaryRelease.html) - Technique to reduce the risk of introducing a new software version in production by slowly rolling out the change to a small subset of users before rolling it out to the entire infrastructure and making it available to everybody.
- [CAP Theorem](http://blog.thislongrun.com/2015/03/the-cap-theorem-series.html) - States that it is impossible for a distributed computer system to simultaneously provide all three of the following guarantees: Consistency, Availability and Partition tolerance.
- [Cloud Design Patterns](https://msdn.microsoft.com/en-us/library/dn600223.aspx) - Contains twenty-four design patterns that are useful in cloud-hosted applications. Includes: Circuit Breaker, Competing Consumers, CQRS, Event Sourcing, Gatekeeper, Cache-Aside, etc.
- [Hexagonal Architecture](http://alistair.cockburn.us/Hexagonal+architecture) - Allows an application to equally be driven by users, programs, automated test or batch scripts, and to be developed and tested in isolation from its eventual run-time devices and databases.
- [Microservice Architecture](http://martinfowler.com/articles/microservices.html) - Particular way of designing software applications as suites of independently deployable services.
- [Microservices and SOA](http://www.oracle.com/technetwork/issue-archive/2015/15-mar/o25architect-2458702.html) - Similarities, differences, and where we go from here.
- [Microservices Trade-Offs](http://martinfowler.com/articles/microservice-trade-offs.html) - Guide to ponder costs and benefits of the mircoservices architectural style.
- [Reactive Manifesto](http://www.reactivemanifesto.org/) - Reactive systems definition.
- [Reactive Streams](http://www.reactive-streams.org/) - Initiative to provide a standard for asynchronous stream processing with non-blocking back pressure.
- [Testing Strategies in a Microservice Architecture](http://martinfowler.com/articles/microservice-testing/) - Approaches for managing the additional testing complexity of multiple independently deployable components.
- [Blockchain ID](https://github.com/blockstack/blockchain-id/wiki) - A unique identifier that is secured by a blockchain. Blockchain IDs are simultaneously secure, human-meaningful, and decentralized, thereby squaring Zooko's triangle.
- [Migrating to Cloud Native Application Architectures](http://pivotal.io/platform/migrating-to-cloud-native-application-architectures-ebook) - This O’Reilly report defines the unique characteristics of cloud native application architectures such as microservices and twelve-factor applications.
- [The Art of Scalability](http://theartofscalability.com/) - The Art of Scalability: Scalable Web Architecture, Processes, and Organizations for the Modern Enterprise. Martin L. Abbott, Michael T. Fisher.
- [Microservices Resource Guide](http://martinfowler.com/microservices/) - Martin Fowler's choice of articles, videos, books, and podcasts that can teach you more about the microservices architectural style.
- [Microservice Patterns](http://microservices.io/) - Microservice architecture patterns and best practices.
- [OSGi Alliance](http://www.osgi.org/) - OSGi technology facilitates the componentization of software modules and applications and assures remote management and interoperability of applications and services over a broad variety of devices.
To contribute, please, [open an issue](https://github.com/mfornos/awesome-microservices/issues) or [create a pull request](https://github.com/mfornos/awesome-microservices/pulls).
