Jenkins has no lack of big names on its list of users either, Dell, Tumblr, and Netflix among them. Clearly both of these products are capable of operating at a high level at even the largest scale. As we’ve mentioned, Jenkins is open source, under the MIT license, and as such can be downloaded and used for free. For this reason, smaller companies may want to approach CI from a “why wouldn’t we use Jenkins” perspective. Jenkins’ release history is quite impressive, summarized on their change log, with detailed information about each release. To use this authentication method, check that your machine includes Kerberos libraries and that the authentication is properly configured.<\/p>\n