The open source technology behind Twitter (

In an interview at, Twitter's open source manager, Chris Aniszczyk, talks about the how the company uses (and contributes to) open source. "We use a lot of open source software. In my opinion, it’s a no-brainer as open source software allows us to customize and tweak code to meet our fast-paced engineering needs as our service and community grows. When we plan new engineering projects at Twitter, we always make sure to measure our requirements against the capabilities of open source offerings, and prefer to consume open source software whenever it makes sense. Through this method, much of Twitter is now built on open source software, and as a result the open source way is now a pervasive part of our culture. On top of that, there is a positive cycle of teaching and learning within open source communities that we benefit from."