• Twilio extends the Atlassian platform to streamline their work

    "We could use JIRA Software right out of the box, but the fact that we can extend it and write against its API really allows my team to get exactly what we need from JIRA." - Simon Thorpe, Director of Product Management
    Read story
  • How Wittified built a successful business on Atlassian Marketplace

    "I first wrote an add-on for myself. Then I realized many other people needed the same solution. I started making a business out of developing add-ons." - Daniel Wester, Chief Product Architect for Wittified add-ons
    Read story
  • Zephyr builds a multi-million dollar business

    "With the Atlassian Ecosystem you already have a market of more than half a million instances and a Marketplace to instantly sell to them." - Samir Shah, founder, Zephyr
    Read story
  • Microsoft integrates with Atlassian

    "Microsoft and Atlassian are working together to streamline how developers deploy and monitor their applications on Azure." - John Shewchuk, Technical Fellow, Microsoft

Build a better team

Use the Atlassian platform to build add-ons and integrations for any team. If you’re new to building on Atlassian, we’re here to help.


Why build with Atlassian?

Whether you’re customizing your instance or integrating your app to reach our millions of users, the Atlassian platform provides the tools and flexibility to do it. Learn more


Explore the APIs

Customize Atlassian with our APIs and more. Whether it’s JIRA, Confluence, HipChat, or Bitbucket, we have APIs to help you get the data you need. View APIs


Grow your business

You create the add-ons. We create the Marketplace. Have an idea to make Atlassian’s products even better? Share your brilliant additions on the Atlassian Marketplace. Learn more


Upcoming developer events and news

Attend one of our developer events and keep up to date on the latest from our community.

Get notified

AtlasCamp Europe 2017

Join us in Barcelona May 4-5 and learn how to extend the power of Atlassian.  

Atlassian Summit Europe 2017

Atlassian Summit takes place right before AtlasCamp on May 2-3 in Barcelona. Sign up for both events and save with the Developer Bundle.  

Codegeist Hackathon

Codegeist is Atlassian's annual online hackathon. It's an opportunity to turn your add-on idea into reality. Check out the winners from 2016.