Sign up to our Mattermost site

Go to https://community.mattermost.com and join the Contributors channel to ask questions.

Set up your developer environment

Follow our instructions for setting up a developer machine. If you’re working on the mobile apps, you’ll also need a mobile dev environment.

Choose a ticket

Select a ticket and comment to let people know you’re working on it. If there’s no ticket for what you want to work on, follow the process here.

Start developing

Check out our developer flow for tips on working with the Mattermost codebase. When your changes are ready, run through our checklist for pull requests. Note that if it’s your first contribution, there is a standard CLA to sign.

Sign up to our Mattermost site

Go to https://community.mattermost.com and join the Developers: Mobile channel to ask questions.

Set up your developer environment

Follow our instructions for setting up a developer machine along with a mobile dev environment.

Choose a ticket

Select a ticket and comment to let people know you’re working on it. If there’s no ticket for what you want to work on, follow the process here.

Start developing

When your changes are ready, run through our checklist for pull requests. Note that if it’s your first contribution, there is a standard CLA to sign.

Sign up to our Mattermost site

Go to https://community.mattermost.com and join the Desktop channel to ask questions.

Set up your developer environment

Follow our instructions for setting up a developer machine.

Choose a ticket

Select a ticket and comment to let people know you’re working on it. If there’s no ticket for what you want to work on, follow the process here.

Start developing

When your changes are ready, run through our checklist for pull requests. Note that if it’s your first contribution, there is a standard CLA to sign.

Sign up to our Mattermost site

Go to https://community.mattermost.com and join the Contributors channel to ask questions.

Set up your developer environment

Follow our instructions for setting up a developer machine.

Choose a ticket

Select a ticket and comment to let people know you’re working on it. If there’s no ticket for what you want to work on, follow the process here.

Start developing

Check out our developer flow for tips on working with the Mattermost codebase. When your changes are ready, run through our checklist for pull requests. Note that if it’s your first contribution, there is a standard CLA to sign.

Sign up to our Mattermost site

Go to https://community.mattermost.com and join the Developer Toolkit channel to ask questions.

Choose an integration type

Visit the Apps and Integrations for a current list of open source integrations and projects to get ideas on how to get started.

Start developing

Read our integrations guide for tips on how to integrate with the Mattermost server.

Share your integration

Built something for Mattermost? We want to hear about it! Let us know here.

Sign up to our Mattermost site

Go to https://community.mattermost.com and join the Localization channel to ask questions.

Sign up to our translation server

Go to https://translate.mattermost.com/ and sign up.

Choose a language

Confirm that the language you want to help translate is listed in the Translation server.

• If it is, perhaps offer to help translate or review and make suggestions.
• If it’s not, go to https://community.mattermost.com and ask to set up your language on the Localization channel, so you can start helping with the translation.

Start translating

Read our Localization documentation for more information on translations rules and maintenance process.

Sign up to our Mattermost site

Go to https://community.mattermost.com and join the Documentation channel to ask questions.

Choose a ticket

To edit Mattermost documentation, choose a ticket and add a comment to let people know you’re working on it. See process for contributing.

Start writing

Review our documentation guidelines for tips on how to create effective docs. Note that if it is your first pull request, you will be asked to sign a standard CLA.

Report a security issue

Read our process for reporting a security vulnerability.

Follow updates

14 days after the security issue that you reported has been resolved, the security bug fix is posted on our Security Updates page and you are added to our Security Research Hall of Fame.