What is bitbucket?

Bitbucket

Bitbucket is a web-based hosting service for projects that use either the Mercurial or Git revision control systems. Bitbucket offers both commercial plans and free accounts. It offers free accounts with unlimited numbers of private repositories (which can have up to five users in the case of free accounts) as of September 2010. Private repositories are not shown on profile pages - if a user has only private repositories, it will simply state that the user does not have any repositories. Bitbucket is written in Python using the Django web framework.

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Some articles on bitbucket:

Bitbucket - Logo
... the bucket is the alchemical and planetary symbol for Mercury, and refers to Bitbucket hosting Mercurial repositories ... When Bitbucket announced Git support, the sticker icon switched to be the primary logo of Atlassian ...