GitHub Secure Open Source Fund

Open all year GitHub United States

Grant

USD 10,000 per project

Apply on the official site

What it funds: Funding and security training for maintainers of widely used open source projects
Who can apply: Current maintainers of an open source project (up to two people)
Aged 18 or over with an active GitHub profile, in a GitHub Sponsors region
Clear open source licence, community traction and governance
When you can apply: Open all year
How to apply: Fill the application form linked on the fund page; join a 3 week security programme
Best for: Prototype, Early revenue, Growth stage
Sectors: Developer Tools Cybersecurity
Run by: International programmes

Support for International Patent Protection in Electronics and IT (SIP-EIT)Up to ₹15 lakh per invention (50% of cost) Open all year
TCOE India: Prototyping, PoC, Validation and Pilot SupportUp to 80% of cost, max ₹50 lakh per pilot Open all year
Arbitrum Audit ProgramAmount set per project (USD 10 million pool in ARB over 12 months) Open all year
DRDO Technology Development Fund (TDF)Projects up to ₹50 crore; TDF funds up to 90% of cost Open now
FLOSS/fundUp to USD 100,000 a year per project (from USD 10,000) Open all year
FOSS United Grants₹1 lakh to ₹8 lakh for projects (past grants) Open all year
NLnet Open Calls (Restack and CodeSupply funds)€5,000 to €50,000 for a first grant Closes 3 Nov 2026

Starter opens 30 grants in full. Pro opens every one.