| City of Newport | 🍎 | 1 | 5.0★ | Utilities |
| City of Oberlin | 🍎 | 1 | 4.8★ | Reference |
| City of Olathe, Inc. | 🍎 | 1 | 4.9★ | Reference |
| City of Orange | 🍎 | 1 | — | Book |
| City of Palo Alto | 🍎 | 1 | — | Lifestyle |
| City of Papillion | 🍎 | 1 | 5.0★ | Lifestyle |
| City of Pembroke, GA | 🍎 | 1 | — | Education |
| City of Richmond, VA | 🍎 | 1 | 5.0★ | Lifestyle |
| City of Rocklin (CA) | 🍎 | 1 | 5.0★ | Business |
| City of Sheboygan | 🍎 | 1 | 5.0★ | Productivity |
| City of Shelton, WA | 🍎 | 1 | 3.0★ | Reference |
| City of Show Low, AZ | 🍎 | 1 | 3.5★ | Reference |
| City of Smyrna, Georgia | 🍎 | 1 | 3.5★ | Lifestyle |
| City of South Milwaukee | 🍎 | 1 | 4.2★ | Utilities |
| City of St Cloud, Florida Municipal Government | 🍎 | 1 | 2.5★ | Utilities |
| City of St. Petersburg | 🍎 | 1 | 4.7★ | Utilities |
| City of Sun Prairie, Wisconsin | 🍎 | 1 | — | Lifestyle |
| City of Sunnyvale | 🍎 | 1 | 4.6★ | Reference |
| City of Union | 🍎 | 1 | — | Education |
| City of Watertown, WI | 🍎 | 1 | — | Reference |
| City of Waycross, GA | 🍎 | 1 | 1.0★ | Productivity |
| City of West Hollywood | 🍎 | 1 | 2.8★ | Productivity |
| City of Winslow | 🍎 | 1 | — | Reference |
| City-Cowley County Health Department | 🍎 | 1 | 5.0★ | Reference |
| CityGroup | 🍎 | 1 | — | Productivity |
| Citycards Global | 🍎 | 1 | 5.0★ | Entertainment |
| Citymapper Limited | 🍎 | 1 | 4.9★ | Navigation |
| Cityredbird Location Services Ltd. | 🍎 | 1 | 4.8★ | Food & Drink |
| Civi Corp | 🍎 | 1 | 4.3★ | GAMES |
| CivicPlus, Inc. | 🍎 | 1 | 2.3★ | Lifestyle |
| Civica UK Limited | 🍎 | 1 | — | Reference |
| Civil Aviation Authority (QCAA) | 🍎 | 1 | 4.7★ | Weather |
| Civil Magazacilik Anonim Sirketi | 🍎 | 1 | 4.5★ | Shopping |
| Civista Bank | 🍎 | 1 | 4.5★ | Finance |
| Ck Collab LLC | 🍎 | 1 | 5.0★ | Developer Tools |
| Ckord, Inc. | 🍎 | 1 | 4.6★ | Music |
| Cladwell Inc. | 🍎 | 1 | 4.3★ | Lifestyle |
| Claire Marlier Maurice | 🍎 | 1 | 4.6★ | Music |
| Clan Holohan Limited | 🍎 | 1 | — | Health & Fitness |
| Clapenjoy Kids Learning games for toddlers, boys and girls GmbH | 🍎 | 1 | 4.3★ | Education |
| Clapfoot Inc. | 🍎 | 1 | — | GAMES_ARCADE |
| Clapp Technologies, LLC | 🍎 | 1 | 5.0★ | Lifestyle |
| Clare Controls | 🍎 | 1 | 4.7★ | Lifestyle |
| Claremont Computer Network LLC | 🍎 | 1 | — | Productivity |
| Clarence Chng | 🍎 | 1 | — | Education |
| Clari Inc. | 🍎 | 1 | 1.7★ | Business |
| Clarins | 🍎 | 1 | 4.9★ | Shopping |
| Clarisa Ananda | 🍎 | 1 | — | Graphics & Design |
| Clarity Benefit Solutions | 🍎 | 1 | 4.5★ | Medical |
| Claritysoft LLC | 🍎 | 1 | 5.0★ | Business |