"Open source" is not just about making software. It's about how we engage with each other, how we innovate and what problems we ultimately solve. This NOAA user group is dedicated to promoting knowledge and sharing experiences about geospatial free and open source software,  and all that follows.

R is an open source programming language for statistical computing, data analysis, and graphical visualization. R has an estimated one million users worldwide, and its user base is growing. While most commonly used within academia, in fields such as computational biology and applied statistics, it is gaining currency in commercial areas such as quantitative finance and business intelligence. Among R's strengths as a language are its powerful built-in tools for inferential statistics, its compact …

Meet and learn from other PHP Developers in the Baltimore area! Come to a PHP Meetup to exchange ideas, talk about code, architecture, innovation, and open source technologies and projects in general. Anyone interested in PHP or it's surrounding technologies is welcome! We meet on the Third Wednesday of every month at 6:30pm! Find us online: Website: http://www.baltimorephp.org Facebook: http://www.facebook.com/group.php?gid=153308396924&ref=ts …

This is the group of Accumulo users and developers local to DC / VA / MD. Accumulo is a scalable, open source BigTable implementation written in Java with cell-level security and server-side processing. Join us!

An OpenStack DC Group for the Washington, DC metro area. Technologists, entrepreneurs, investors, government, or corporate employees are encouraged to join in this exciting and very promising world of open source cloud computing called OpenStack (http://openstack.org/).  Let's OpenStack & learn together.  We will be known as the OpenStackers. Are you interested in deploying a Private, Community, Public and/or a Hybrid cloud in the Washington, DC metro area or do you just want to learn or teach? …

DC Perl Mongers meets monthly to celebrate and share Perl and related (generally open-source) technologies and cultures. Also check out our website/wiki - http://dc.pm.org/

This group is a way for the DCPHP Developers' Group to stay in touch and provide a source of information on what we're up to. Sign up for our mailing list for PHP discussion and more meeting info. Recruiters are welcome to post to that mailing list provided jobs are PHP-related and the subject line begins with [job]. Our Meetup page is sponsored by ServerGrove - PHP Framework Hosting. " Fast servers tuned for hosting applications built on PHP, Symfony and Zend Framework"  Please take some …

A group of database technologists that discuss data technology of all types, but with a focus on the PostgreSQL relational database. Open to developers, admins, and engineers of all types!

… Free admission, open to the public (suggested donation $2.) The first step is to get to know each other better to see if we are ready to work together harmoniously with appreciation, forgiveness and understanding. These monthly community events provide opportunities to develop more allies for the project and to connect with others interested in similar topics. Express your interest to the co-organizers and followup to build goodwill and mutual trust. WHEN: 12:30PM TO 2:30PM on the third Sundays …

The recent wave of interest in semantic technology has led to the growing popularity of Semantic Meetups in US and around the world. The purpose of local Meetup is to provide a forum for newcomers to learn about the foundational technologies of the Semantic Web [] and for the well versed to keep up on industry trends and share their experiences.  Discuss topics will cover a broad range of subject matter that includes OWL, RDF, SPARQL, RIF, Open Linked data, semantics in the enterprise, rules, in …

This group is designed for women in the tech industry to talk about their ideas and projects and get advice and support from others in the community. Anyone with a tech background who wants to learn new things or anyone with good things to share should join!

Live in MD or DC area and want to get together and talk about NoSQL technologies like Hadoop, HBase, CouchDB, Cassandra? Whether you're an expert or an interested novice, everyone is welcome to come and discuss NoSQL technologies, get and trade tips, network, and learn more from each other.

With the growing interest in Cyber Security and the various certifications, this is a club where like minded Ethical Hackers, Penetration Testers and Network / Computer Security professionals can come together and share knowledge and mentor those looking to break into the field. If you have or trying to get a Network+, Security+, CCNA, CEH, CISSP, CHFI...etc, lets get together and expand on our knowledge by cooperating in lectures, hands on labs and group discussions about all things network / c …

Meet other local developers, architects, and designers focused on Java, J/EE (J2EE), and J/ME (J2ME) technologies. We try to strike a balance between networking/socializing and discussing/learning about code, architecture, and innovations. Both beginners and pros are welcome!

Meet other local JavaScripters to share knowledge, help each other out, review new technology and dream up new ways to use and make JavaScript the most loved language around. We encourage knowledge sharing and a comfortable environment to be yourself. Most of out focus is in the usage of the many JavaScript libraries available to aid in JavaScript development, including ExtJS, Sencha Touch, YUI, jQuery, Dojo, Script.aculo.us, MooTools, etc.

                  Got an idea for the next great mobile app, web service or product?  If you are ambitious and hungry for success, this is the place for you.  Are you a graphic/industrial designer, mobile or web developer?  Are you an independent contractor, entrepreneur, or small business owner?  If so, this is where you need to be.  If you are an investor looking for opportunities, these are the people you may want to meet.  Want to contribute or create a new start up venture, here is your op …