| Old Lyme Rowing Association IncOld Lyme | Form 990-EZ | $107,311FY2025 |
| Sun Moon & Stars IncWatertown | Form 990-EZ | $106,580FY2025 |
| STS Foundation IncSouthbury | Form 990 | $106,295FY2025 |
| Pangregorian of Connectuicut Charitable Foundation IncNew Haven | Form 990-EZ | $105,885FY2023 |
| Chinese Language School of Connecticut IncRiverside | Form 990-EZ | $104,167FY2025 |
| New Milford High School Band ParentsNew Milford | Form 990-EZ | $102,824FY2025 |
| Heart Warrior Achievement Scholarship IncGroton | Form 990-EZ | $102,636FY2025 |
| St Ann Society of Norwalk IncNorwalk | Form 990 | $102,624FY2025 |
| Cazeo IncManchester | Form 990-EZ | $102,180FY2025 |
| North Canaan Education Foundation IncCanaan | Form 990-EZ | $102,170FY2024 |
| Connecticut StartersWallingford | Form 990-EZ | $101,476FY2025 |
| Edwin O Smith Foundation IncStorrs Mansfield | Form 990 | $101,348FY2025 |
| Troop 3 Derby Bsa Alumni & Friends Foundation IncDerby | Form 990 | $101,124FY2025 |
| Greenwich Police Dept Scholarship Fund Inc Greenwich Police DeptGreenwich | Form 990 | $100,690FY2024 |
| Project Imo IncNorth Windham | Form 990-EZ | $100,625FY2025 |
| Stratford Rotary Club Foundation IncStratford | Form 990 | $100,539FY2025 |
| Friends of the Lucy Robbins Welles Library IncNewington | Form 990-EZ | $100,489FY2025 |
| Brown Elementary School Parent Teacher OrganizationMadison | Form 990-EZ | $99,870FY2025 |
| The Hord Foundation IncDanbury | Form 990-EZ | $99,790FY2025 |
| The Parent Teacher Council of StamfordStamford | Form 990-EZ | $97,038FY2025 |
| Friends of the Fairfield Public Library IncFairfield | Form 990 | $96,580FY2025 |
| Serc FoundationWaterbury | Form 990-EZ | $95,572FY2025 |
| Glastonbury Education FoundationGlastonbury | Form 990-EZ | $94,863FY2025 |
| Brave Enough to Fail IncNew Milford | Form 990-EZ | $94,618FY2024 |
| All Kids Moving Forward IncWilton | Form 990-EZ | $94,451FY2025 |
| Human Schools ProjectNew Haven | Form 990-EZ | $94,360FY2024 |
| Parent Teacher Association of Connecticut IncRedding | Form 990-EZ | $94,271FY2025 |
| South School Parent Teacher CouncilNew Canaan | Form 990-EZ | $93,860FY2025 |
| Christopher Labbadia Memorial FundBerlin | Form 990-EZ | $93,495FY2025 |
| Booth Hill Elementary School PTOShelton | Form 990-EZ | $93,200FY2025 |
| East Lyme Scholarship Association IncNiantic | Form 990-EZ | $92,847FY2025 |
| Yale Model Congress Association IncNew Haven | Form 990-EZ | $92,009FY2025 |
| South Norwalk Boat Club Educationalfoundation IncNorwalk | Form 990-EZ | $91,784FY2025 |
| Parent Booster USA IncTrumbull | Form 990-EZ | $90,975FY2025 |
| Connecticut Reading Association IncCheshire | Form 990-EZ | $90,408FY2026 |
| Rotary Foundation of the Torington Winsted AreasTorrington | Form 990-EZ | $89,655FY2025 |
| North Branford Soccer Club NBSCNorth Branford | Form 990-EZ | $89,530FY2025 |
| Parent Booster USA IncWestport | Form 990-EZ | $88,986FY2025 |
| John Pettibone Memorial Scholarship Fund IncNew Preston | Form 990 | $88,874FY2024 |
| Wildcat Kick Off Club IncSeymour | Form 990-EZ | $88,802FY2026 |
| Suffield Elementary PTOWest Suffield | Form 990-EZ | $87,869FY2025 |
| Gray Foundation IncWallingford | Form 990-EZ | $87,357FY2025 |
| Hartford Gay Mens Chorus IncHartford | Form 990-EZ | $86,329FY2025 |
| International Union of Operating Engineers Local 478 Educational TRHamden | Form 990-EZ | $85,109FY2025 |
| Bethel Winterguard AssociationBethel | Form 990-EZ | $83,837FY2025 |
| Somers Education Foundation IncSomers | Form 990 | $83,406FY2025 |
| Union Agricultural Society of Barkhamsted Colebrook and HartlandRiverton | Form 990-EZ | $80,878FY2025 |
| Yale Club and Scholarship Foundation of Hartford IncWest Hartford | Form 990 | $80,196FY2025 |
| The Parent Teacher Council of StamfordStamford | Form 990-EZ | $79,677FY2025 |
| Eastern Connecticut Community Garden AssociationNew London | Form 990-EZ | $79,173FY2025 |