Project of the month: Rocket.Chat


Rocket.Chat is a powerful open source web chat server, similar in function to Slack, enabling team collaborations and communications.

News and Events



The OW2 election process for the year 2020 has started. As an open community, OW2 is driven by its members and your opinion matters. Please do not forget to vote!  The deadline for Individual and Corporate members application is February 14.  



OW2con'20 is launched!  The Call For Presentations is open. We look forward to reading your proposals. See the details and this year's theme and submit before the February 28 deadline. Check our sponsorship opportunities



Visit us and meet with community members at FOSDEM 2020! OW2 will be showcased on a booth and coordinating a Devroom on Dependency Management. We look forward to see you there!



OW2 is as usual highly involved in POSS, with the organization of a community booth in the exhibition and the coordination of four conference tracks : Open Source Community Summit, OSS in Big Cities, Collaborative Innovation, OSS Governance.  


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Why is tax-funded software not published as Free Software? OW2 supports the Public Money? Public Code! campaign steered by the Free Software Foundation Europe (FSFE). Sign the Open Letter!


How can you take part in the Community?

What is OW2

OW2 is an independent community dedicated to open source industry-grade enterprise computing infrastructure software, including middleware, application platforms and cloud computing technologies.

Why Join OW2

Make a stand, focus your open source efforts, help steer the community, increase your open source visibility, promote your projects, and join renowned industry leaders, SMEs, academics and individuals.

Free Infrastructure Software

OW2 hosts some one hundred open source projects spanning application platforms, components, middleware, cloudware and tools for the development, deployment and management of distributed and cloud applications.

Submit a Project

At OW2 it usually starts with an open source project. We provide resources, governance and help build awareness for your project. Checkout the project life cycle and fill in the submission form. Join the code base.

Quality and Trustworthiness

Enhance the quality and facilitate the market adoption of your project with the unique suite of tools freely accessible with Open-source Software Capability Assessment Radar (OSCAR) the OW2 quality program.


Check out the beta version of OW2 marketplace at EU-funded project AppHub. Stay tuned for future development and full opening of the marketplace to OW2 projects in 2017.

Download OW2 Software

Infrastructure Software, Application Platform, Middleware, Tools

An ecosystem of incredible richness
OW2 allowed us to integrate an ecosystem of incredible richness and offered unexpected visibility... more

Collaborative Projects

Leveraging open source to foster collaborative innovation is a powerful strategy. OW2 is an experienced Open Source Software community for collaborative R&D projects. We provides community support and dissemination services and community building services to multinational open source collaborative projects and large collaborative R&D projects. In particular, OW2 has established itself as the reference dissemination and community platform for complex government-supported, open source-oriented projects.

They trust us