OS4Science
Inaugural OS4LS RFA of the Open Source for Science Fund. LOI due 2026-06-08; full proposals due 2026-07-21. Submissions are closed. Award notifications expected October 2026.
From the Grant Wire
Grant programs across
crypto, AI and open source.
Who funds them, what they fund and how to apply.
480 programs on file258 active programsCrypto · AI · Open source
Optimism Foundation
A recurring Optimism grants mission that funded Superchain growth through the Grants Council. Season 9 submissions closed May 20, 2026. The Grants Council was later dissolved; there is no public Season 10 window as of 2026-08-29.
Decentraland
A season-based Decentraland funding program for small open-source projects that can ship within 90 days. Season 1 offered up to $15,000 in MANA for mobile content and AI-assisted builder tooling; applications closed April 24, 2026. No later season has been announced.
NLnet Foundation
EUR 10M Horizon Europe cascade-funding programme led by NLnet with FSFE and other partners, offering EUR 5,000-50,000 R&D grants with rolling calls every two months (2026-2030) plus a scale-up track, across open-tech sovereignty/privacy, internet resilience, environmental impact, and supply-chain transparency. NLnet currently describes the fund as being set up; the first recorded call is closed and the next window is not yet confirmed on the Restack page.
Sia Foundation
A Sia Foundation funding program for open-source tools and applications supporting user-owned data. Intake for new proposals was paused on June 25, 2026 through the end of Q3 while the Foundation completes a long-term program strategy; approved projects continue during the pause.
Status describes whether a program is running. Application methods are recorded separately. Read the funder’s terms before applying.