| Rational Games IncCambridge | Form 990-EZ | $158,533FY2025 |
| Randall Library Friends AssociationStow | Form 990-EZ | $157,551FY2025 |
| Harvard-Kent Parents Association IncCharlestown | Form 990-EZ | $157,195FY2025 |
| Sunshine Farm Sanctuary IncBridgewater | Form 990-EZ | $155,946FY2024 |
| Friends of the Medford Family Network CorpMedford | Form 990-EZ | $155,729FY2025 |
| Current Concepts in Urological HealthBeverly | Form 990-EZ | $155,729FY2024 |
| Nauset Warriors Booster Club IncOrleans | Form 990-EZ | $155,633FY2025 |
| Leadership Southcoast IncFall River | Form 990-EZ | $153,482FY2025 |
| John Paul II Polish Language SchoolBoston | Form 990-EZ | $152,997FY2025 |
| Lynnfield Public Schools Parent Teacher Organization IncLynnfield | Form 990 | $152,457FY2025 |
| Trustees of Hopkins AcademyHadley | Form 990 | $152,397FY2025 |
| Audible Local Ledger IncMashpee | Form 990-EZ | $150,936FY2025 |
| New England Head Start AssociationTaunton | Form 990-EZ | $150,866FY2025 |
| Mary S Peake Fellowship IncCambridge | Form 990-EZ | $150,862FY2025 |
| World Computer Exchange IncHull | Form 990 | $150,755FY2025 |
| Mansfield High School Boosters Club IncMansfield | Form 990 | $150,418FY2025 |
| Acton Boxboro Youth Hockey Association IncActon | Form 990-EZ | $150,317FY2025 |
| Wrentham Elementary Parent Teacher Organization IncWrentham | Form 990-EZ | $150,171FY2025 |
| Connective IncOak Bluffs | Form 990-EZ | $150,000FY2023 |
| Accelerated College Experiences IncJamaica Plain | Form 990-EZ | $149,761FY2025 |
| Friends of the PerrySouth Boston | Form 990-EZ | $149,370FY2025 |
| Education Quality Outcomes Standards IncBoston | Form 990-EZ | $149,333FY2024 |
| PTA Massachuetts Parent-Teacher Association IncBelmont | Form 990-EZ | $148,960FY2025 |
| Filarmonica Santo Antonio IncCambridge | Form 990 | $148,960FY2024 |
| Friends of the Gladys E Kelly Public Library IncWebster | Form 990 | $148,893FY2025 |
| Medfield K-8 Parent Teacher Organization IncMedfield | Form 990-EZ | $148,697FY2025 |
| Southeastern Massachusetts Arts CollaborativeAttleboro | Form 990-EZ | $148,489FY2025 |
| Friends of Waltham Public Library IncWaltham | Form 990 | $147,369FY2024 |
| Alices House IncHumarock | Form 990 | $147,072FY2024 |
| Associazione Amici IncMedford | Form 990-EZ | $146,365FY2025 |
| Ambrose Parent Teacher OrganizationWinchester | Form 990-EZ | $146,315FY2025 |
| Boston College Law School Publication TrustNewton Centre | Form 990 | $145,942FY2025 |
| Debate Spaces LimitedCambridge | Form 990-EZ | $145,883FY2024 |
| Wilbraham Hampden Scholarship FoundationWilbraham | Form 990-EZ | $145,435FY2025 |
| New England College of Occupational and Environmental MedicineWinchester | Form 990-EZ | $144,933FY2025 |
| Mass LiberationRoxbury | Form 990-EZ | $143,964FY2024 |
| Northeast Coonhound Rescue IncLexington | Form 990-EZ | $143,272FY2024 |
| Elements Learning Collaborative IncFairhaven | Form 990-EZ | $142,385FY2025 |
| Sawyer Library FoundationGloucester | Form 990 | $141,050FY2025 |
| Kurukulla Center for Tibetan Buddhist Studies IncMedford | Form 990 | $140,405FY2025 |
| International Musculoskeletal Society -Ims- IncAndover | Form 990-EZ | $140,255FY2025 |
| Norwell High School Boosters Foundation IncNorwell | Form 990 | $139,991FY2025 |
| Cuttyhunk STEAM Academy IncHanson | Form 990-EZ | $139,838FY2025 |
| Oakmont Overlook Music Parents Association IncAshburnham | Form 990-EZ | $139,457FY2025 |
| Elite Education Learning Services IncRandolph | Form 990-EZ | $138,382FY2025 |
| Westport Education Foundation IncWestport | Form 990-EZ | $138,376FY2025 |
| Jitegemee IncCambridge | Form 990-EZ | $136,944FY2024 |
| LHMC Alumni Association of North AmericiaChestnut Hill | Form 990-EZ | $136,661FY2024 |
| Brickyard Collaborative IncLynn | Form 990-EZ | $136,245FY2025 |
| Petersham Memorial LibraryPetersham | Form 990 | $136,224FY2025 |