| LouEvil | louevil | 359 | counter-culture social group building the metro one fist at a time | Join |
| Louisville, KY | louevil | 363 | Louisville, KY | Join |
| mail digests test group | John Geraci | 2 | for testing | Closed |
| Milano | michetravi | 358 | Il futuro della citta' | Join |
| Milwaukee Open Government Data Work Group | dpk | 8 | Researching and recommending best practices for public data disclosure in governmental bodies serving Metro-Milwaukee | Request membership |
| Musicon, Roskilde, Denmark | nogenlunde | 368 | Musicon is a big old industrial space, which is growing from within. The vision is in 10-15 years to be a musical and creative part of town. | Join |
| Perth, Western Australia | windsong50 | 366 | All about living and working in the City of Perth | Join |
| Phone Tracker Development | John Geraci | 388 | A group for people interested in building a mobile phone application for bus tracking etc. | Join |
| Safford AZ | Zennerd | 4 | Discussing Safford and the Gila Valley, AZ | Request membership |
| São Paulo | brunoscarto | 394 | discussing São Paulo | Join |
| Sensor Networks | Dave Pentecost | 411 | Deployment of low-cost fixed or mobile sensor networks, on a community or municipal level | Join |
| Seoul | bonieworld | 366 | discover it again | Join |
| Shanghai | michetravi | 367 | Smart city? | Join |
| SickCity Development | John Geraci | 397 | Development Group for SickCity | Join |
| Transportation Informatics | Anthony Townsend | 493 | For cross-region discussions about transportation informatics projects | Join |
| Waterford | paulmwatson | 425 | Waterford, Ireland | Join |
