Open source is an essential part of any software strategy—from a developer’s laptop to the data center. At VMware, we’re committed to open source and their communities so that we can all deliver better solutions: software that’s more secure, scalable, and innovative. VMware Tanzu portfolio is open source aligned and built on a foundation of open source projects.
Cloud Native Computing Foundation Projects
Kubernetes® is an open source system for automating deployment, scaling and management of containerized applications. It groups containers that make up a system into logical units for easy management and discovery. Kubernetes builds upon 15 years of experience of running production workloads at Google®, combined with best-of-breed ideas and practices from the community. Kubernetes is released by the Linux Foundation’s Cloud Native Computing Foundation under the terms of the Apache License 2.0.
Buildpacks are pluggable, modular tools that translate source code into OCI images. Buildpacks provide a higher-level abstraction for building apps compared to Dockerfiles. The Cloud Native Buildpacks project was initiated by Pivotal (now part of VMware) and Heroku in January 2018 and joined the Cloud Native Sandbox in October 2018. The project aims to unify the buildpack ecosystems with a platform-to-buildpack contract that is well-defined and that incorporates learnings from maintaining production-grade buildpacks for years at both Pivotal and Heroku.
Harbor is an open source container image registry that secures images with role-based access control, scans images for vulnerabilities and signs images as trusted. A CNCF Incubating project, Harbor delivers compliance, performance, and interoperability to help you consistently and securely manage images across cloud native compute platforms, like Kubernetes and Docker.

Cloud Foundry Foundation Projects
Cloud Foundry® is an open source Platform as a Service (PaaS), sponsored and led by VMware, with contributions from a large ecosystem of organizations and individual developers. Cloud Foundry provides users with a choice of clouds, developer frameworks and application services, while increasing a user’s ability to build, test and scale applications. Cloud Foundry is released under the terms of the Apache License.

Cloud Foundry (CF) BOSH is a cloud-agnostic open source tool for release engineering, deployment, and lifecycle management of complex distributed systems. It’s designed to package, deploy, and manage infrastructure on any cloud. Though most Cloud Foundry deployments use CF BOSH, if you’re a developer, you may not have worked with CF BOSH directly. Most distributions and managed Cloud Foundry environments use CF BOSH to holistically manage the environment so that you can focus on coding and delivering business value.
VMware Projects
Spring, sponsored by VMware, is the most popular and complete application development framework for enterprise Java. Spring projects provide comprehensive infrastructure support for developing Java applications. Millions of developers use the Spring Framework, Spring Boot, and Spring Cloud to build modern web and enterprise applications. The Spring Framework is released under the terms of the Apache License 2.0.

Project Reactor, sponsored by VMware, is a fourth-generation Reactive library for building nonblocking applications on the Java Virtual Machine (JVM) based on the Reactive Streams Specification. This foundation is used by the Spring Framework in version 5.0 and above. Project Reactor is released under the terms of the Apache License, version 2.0.
The Greenplum Database project, sponsored by VMware, is an advanced, fully featured data warehouse. It provides powerful and rapid analytics on petabyte scale data volumes. Uniquely geared toward big data analytics, Greenplum Database is powered by the world’s most advanced cost-based query optimizer delivering high analytical query performance on large data volumes.

Concourse is a continuous integration/continuous delivery tool developed by VMware for use with Cloud Foundry. Concourse can be used to automatically update and patch software, and can be used to test code commits before and after deployment. Sponsored by VMware, Concourse was recently named one of the 10 top open source tools of 2018.
Steeltoe is an open source project and is now a part of the .NET Foundation, enabling .NET developers to implement industry standard best practices when building resilient microservices for the cloud. The Steeltoe client libraries enable .NET Core and .NET Framework apps to easily leverage Netflix Eureka, Hystrix, Spring Cloud Config Server and Cloud Foundry services.

The Open Service Broker API project offers developers, ISVs and SaaS vendors a single, simple and elegant way to deliver services to applications running within cloud native platforms such as Cloud Foundry and Kubernetes. The “Open Service Broker API” is an API specification hosted by the Cloud Foundry Foundation (CFF).


Jasmine is a behavior-driven development (BDD) testing framework for JavaScript. Jasmine doesn’t rely on browsers, the Document Object Model (DOM) or other JavaScript libraries and is great for websites, node.js server-side coding, or any project running JavaScript. Jasmine’s clean syntax makes writing tests a breeze.

Robolectric is a unit test framework for Android that runs tests directly in the JVM without booting the Android emulator. This saves on app development time and makes it simple to test drive an application at every stage of development.

License Finder gathers licensing information for components of projects developed in Ruby, Python, Javascript, CSS, Node.js, Go, and Java, and generates reports on all dependencies. It can automatically “approve” libraries with licenses that match a licensing allowlist and builds a task list of actions necessary to bring the project into compliance with your company’s standards and policies.
Apache Software Foundation Projects
RabbitMQ, sponsored by VMware, is a complete and highly reliable enterprise messaging system, based on the AMQP standard. RabbitMQ is easy to use, runs on all major operating systems, and supports a huge number of developer platforms. It is both open source and commercially supported. Released under the terms of the Mozilla Public License, RabbitMQ is the most popular AMQP implementation on the planet.
Apache Geode is a data management platform that provides real-time, consistent access to data-intensive applications throughout widely distributed cloud architectures. Geode pools memory (along with CPU, network and optionally local disk) across multiple processes to manage application objects and behavior.
Apache HAWQ is an advanced, elastic SQL query engine that combines exceptional MPP-based analytics performance and robust ANSI SQL compliance. Quickly unlock insights and drive business transformation, natively, from Hadoop data using familiar SQL semantics. HAWQ—together with the integrated Apache MADlib project for scalable in-database analytics, with its data-parallel implementations of mathematical, statistical, graph and machine learning methods for structured and unstructured data—enables companies to swiftly iterate deep, predictive analytics on datasets of virtually any size—from small to enormous.
Apache MADlib is an open source library for scalable in-database analytics. It provides data-parallel implementations of mathematical, statistical and machine learning methods on both Greenplum Database and Apache HAWQ. MADlib uses the MPP architecture’s full compute power to process very large data sets. MADlib algorithms are invoked from a familiar SQL interface so they are easy to use.
Apache Tomcat is a popular open source application server that implements the Java Servlet, JavaServer Pages, Java Unified Expression Language and Java WebSocket technologies. Apache Tomcat powers numerous large-scale, mission-critical web applications (including those written in Spring) across a diverse range of industries and organizations. It is released under the terms of the Apache License 2.0.
Community Projects
Knative (pronounced “kay-nay-tiv”) is a collection of components that provides the missing building blocks that developers need to create modern, source-centric, container-based cloud native applications. The project helps cloud service providers and enterprise platform operators deliver a serverless experience to their developers running Function as a Service (FaaS), PaaS, and Container as a Service (CaaS) workloads using Kubernetes and Istio.
Spinnaker is a battle-tested, open source, multi-cloud continuous delivery platform for releasing software changes with high velocity, stability and confidence. It was originally developed by Netflix and, together with Google, Spinnaker was open sourced. It now has a vibrant and growing community with VMware as a top three contributor to the project. With Spinnaker, you get safe, zero-downtime deployments and rollbacks that enable you to scale across the enterprise. You also get an up-to-date, multi-runtime microservices inventory that enables extensive visibility and management capabilities.

PostgreSQL, often simply Postgres, is an object-relational database management system (ORDBMS) with an emphasis on extensibility and standards compliance. It can handle workloads ranging from small, single-machine applications to large, Internet-facing applications (or for data warehousing) with many concurrent users. On macOS Server, PostgreSQL is the default database; it is also available for Microsoft Windows and Linux (supplied in most distributions).
Foundations
AdoptOpenJDK uses infrastructure, build and test scripts to produce prebuilt binaries for OpenJDK™ with a choice of either the OpenJDK HotSpot or Eclipse OpenJ9 VMs. All AdoptOpenJDK binaries and scripts are open source licensed and available for free. VMware is proud to be a Platinum Sponsor of AdoptOpenJDK.

ODPi is a nonprofit organization committed to simplification and standardization of the big data marketplace. It provides a framework for vendors of Apache Hadoop distributions, their ISV partners, and their end user customers to collaboratively develop reference specifications covering multiple technologies related to Hadoop. This allows for portability of applications developed for Hadoop across multiple vendors' distributions, helping unite the ecosystem for the benefit of end users.
Kubernetes, Harbor and Cluster API, as well as their associated logos, are trademarks of Cloud Native Computing Foundation. Knative and its logo are trademarks of Google LLC. Cloud Foundry and BOSH, as well as their associated logos, are trademarks of Cloud Foundry Foundation. The remaining logos are trademarks VMware, Inc. or its subsidiary.