# Contributing to zopefoundation projects The projects under the zopefoundation GitHub organization are open source and welcome contributions in different forms: * bug reports * code improvements and bug fixes * documentation improvements * pull request reviews For any changes in the repository besides trivial typo fixes you are required to sign the contributor agreement. See https://www.zope.dev/developer/becoming-a-committer.html for details. Please visit our [Developer Guidelines](https://www.zope.dev/developer/guidelines.html) if you'd like to contribute code changes and our [guidelines for reporting bugs](https://www.zope.dev/developer/reporting-bugs.html) if you want to file a bug report.