Mozilla Foundation
The Secure Open Source (SOS) track of Mozilla Open Source Support paid for third-party security audits of widely used open-source software and the remedial work to fix problems found. Of the awards with a disclosed dollar amount, sizes ranged from $15,000 to $187,500; many entries in Mozilla's award directory do not disclose an amount. Mozilla selected candidates directly rather than running an open application process. The broader MOSS program is on indefinite hiatus and not accepting new applications following Mozilla's 2020 restructuring.
- Status
- Ended
- How to apply
- Not recorded
Mozilla Foundation
The Seed Awards track of Mozilla Open Source Support (MOSS) gave early-stage funding to promising open-source projects aligned with Mozilla's mission. Made at least 22 awards totaling roughly $150,000, including to CryptPad, F-Droid, Open Food Facts, FreeBSD, and Kiwi TCMS. Part of the broader MOSS program, now on indefinite hiatus.
- Status
- Ended
- How to apply
- Not recorded
Mozilla Foundation
The Mozilla Technology Fund (MTF) gave awards of up to $50,000 plus a 12-month mentorship cohort to open-source projects tackling a themed public-interest technology challenge each round. The latest sourced cohort is the 2024 AI and Environmental Justice round; no later public call is on file.
- Status
- Paused
- How to apply
- Not recorded
NumFOCUS
Small grants to help NumFOCUS's fiscally sponsored and affiliated open-source scientific computing projects improve usability, grow their communities, and speed release cycles. Calls for proposals normally run 3x/year; applications are currently closed while NumFOCUS updates its financial and administrative systems.
- Status
- Paused
- How to apply
- Not recorded
Open Source Initiative
The Open Source Initiative announced a new fellowship at UN Open Source Week to bridge open source practices and global AI policy, sponsored by organizations including Google and Red Hat. OSI is absent from the org registry.
- Status
- Announced
- How to apply
- Not recorded
Renaissance Philanthropy
Multi-donor fund administered by Renaissance Philanthropy, seeded with support from the Chan Zuckerberg Initiative, Biohub, and Wellcome Trust, funding open-source software infrastructure for science. The inaugural 2026 OS4LS call is closed. The apply page shows no open opportunities as of 2026-08-29.
- Status
- Paused
- How to apply
- Not recorded
OpenStreetMap Foundation
OpenStreetMap Foundation's 2020 Microgrants pilot helped volunteers overcome financial barriers to OpenStreetMap work. The official program page identifies it as the 2020 project; later board discussions have not established a new public intake under this program.
- Status
- Ended
- How to apply
- Not recorded