You are right now! Nearly 70% of web traffic is made possible by the Open Source web server: Apache, like this server. So, in the majority of cases every time you use the web, you use Open Source!

• A shining example in the use of the Open Source is the web browser: Firefox. On a global scale the list of large scale companies using Open Source in IT is staggering.  Here's a few: NASA, Google, Amazon, PayPal, Thawte, Yahoo!, Google, Morgan Stanley, Bristol City council, West Yorkshire Police, NHS, Allied Irish Bank, French Ministry of defense, City of Largo, Florida and many more! 

Open Source software is supported by major hardware and software players, such as IBM, HP, Novell, Computer Associates, Sun Microsystems and Oracle. The White House Web site now runs on open source. Whitehouse.gov now uses a software stack that includes Drupal, the open source content management system and Apache Solr search server. Drupal creator Dries Buytaert said cost cutting and flexibility factored greatly into the switch in platforms. Buytaert who helped in development of the site is co-founder and CTO of the open source software company Acquia.

readwriteweb.com writes that "Facebook has been built from the beginning on open source technologies, according to David Recordon, Facebook's Open Source Programs Manager. But Facebook's use of open source goes far beyond the LAMP stack (or even, beyond the LAMP stack plus Memcached). The company has also created and released several open source projects and participates heavily in others, most notably perhaps, Hadoop." Open Source software can be a-la-cart.

We can help you find the areas which benefit you and, how it can be integrated with existing systems.