FOSS Sustainability Fund

Open Technology Fund · Grant · checked Sep 28, 2026 today

What you get: Maintenance funding, rounds
Amount: No dollar amount stated
Window: PausedNot accepting applications; next round not announced
Next date: Not accepting applications; next round not announced
For: For the project
Lasts: No end date
Process: Concept note, then full proposal
Also: Free security audits from OTF's Security Lab
Who can get it: Internet freedom technology projects; not in countries under US trade sanctions.

Not Currently Accepting Applications

From opentech.fund , checked Sep 28, 2026.

Other funding perks

Company	Perk	What you get	Type	Window	Apply
Alpha-Omega	Alpha-Omega grants Alpha-Omega Security grants in quarterly seasons GrantIn roundsin 3 days	Security grants in quarterly seasons	Grant	In roundsQ4 submissions open in 3 days	Apply
GitHub	GitHub Secure Open Source Fund GitHub $10,000 per project, plus Azure credits GrantRolling	$10,000 per project, plus Azure credits	Grant	Rolling	Apply
Google	Google Summer of Code Google Paid summer open source projects Paid mentorshipIn rounds	Paid summer open source projects	Paid mentorship	In roundsOrganizations apply late January; contributors mid March to early April	Apply
Microsoft	Microsoft FOSS Fund Microsoft Up to $12,500 each quarter GrantIn rounds	Up to $12,500 each quarter	Grant	In roundsQuarterly; projects are nominated by Microsoft employees	Apply
NLnet	NGI Zero grants NLnet €5,000 to €50,000 for a first grant GrantOpen nowin 36 days	€5,000 to €50,000 for a first grant	Grant	Open nowNext deadline, 12:00 CET in 36 days	Apply
Outreachy	Outreachy internships Outreachy $7,000 for a 3-month internship Paid mentorshipIn rounds	$7,000 for a 3-month internship	Paid mentorship	In roundsMay 2027 round: applications in early February (2026: Feb 6 to 13)	Apply