which one best?

[prakashkaruppiah]

This question is in reference to Atlassian Documentation: Set up version control

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[Robert Barrow]

Prakash.

I'd say Git but as Nic suggests - it depends what you're after.   We use a mixture of Git and Mercurial in our company.

I find that SourceTree works well with Git repositories held in Bitbucket (if you don't want to use a command line).   It's completely free and has built-in GitFlow support.

Whichever way you go in terms of tools I suggest you start by learning the basic functionality of Git using the command line interface.

Atlassian have some good tutorials on their site - so I'd start there: https://www.atlassian.com/git/

Good luck!

[Nic Brough -Adaptavist-]

The answer is mostly going to be git

[Nic Brough -Adaptavist-]

Depends on what you want from "best"?