Buildbot vs Travis CI
Buildbot is an open-source framework for automating software build, test, and release processes. At its core, Buildbot is a job scheduling system: it queues jobs, executes the jobs when the required resources are available, and reports the results.
Travis CI is a hosted continuous integration service. It is integrated with GitHub and offers first class support for multiple programming languages. Travis CI's build environment provides different runtimes for different languages, for instance multiple versions of Ruby, PHP, Node.js. It also comes preinstalled with a variety of data stores and common tools like message brokers.