X10 is an Open Source Project, we welcome your participation and feedback. Please send suggestions, questions and/or comments you have concerning the X10 language or tools to the following mailing lists which are hosted on SourceForge.
| List | Focus | Subscribe |
| x10-announce | covers new release announcements | Select |
| x10-users | general x10 user list | Select |
| x10-commits | commits made to the repository | Select |
| x10-core | discussion of implementation & development issues | Select |
| x10-issues | Jira notifications | Select |
| x10-regression | nightly testing results | Select |