| Conference | Events |
|---|---|
| npmCamp | 1 |
| Open Source Bridge | 1 |
| Open Source & Feelings | 2 |
| openstack | 4 |
| OpenStack On Ales | 1 |
| OpenStack Summit | 8 |
| O'Reilly | 1 |
| Pacific Northwest Scala | 2 |
| Parallels & Convergences | 1 |
| PAYMENTSfn | 2 |
| Portland Ruby Brigade | 2 |
| PowerShell | 2 |
| PuppetConf | 1 |
| PyColorado | 1 |
| railsberry | 2 |
| Rails Club | 3 |
| RailsConf | 12 |
| Rails Israel | 2 |
| RailsPacific | 2 |
| RedDot Ruby Conf | 4 |
| REdeploy Conf | 1 |
| Reject Conf | 2 |
| Reject JS | 3 |
| Rest Fest | 1 |
| Rio.JS Conf | 1 |