Open Source Friendly
Beerpay
DonationsAllows simple funding development of existing or new features for Github based projects using Chrome extension.

Bugmark
BountiesA platform, used to conduct research into the use of incentives and prediction markets and tooling for open-source projects.

Community Bridge
CrowdfundingA Linux Foundation project to help advance sustainability, security, and diversity in open source technology by enabling developers to raise and spend funding.

Core Infrastructure Initiative
GrantsA Linux Foundation initiative to collaboratively identify, fund and support critical elements of the global information infrastructure that are in need of assistance.

Free and Open Source Software Audit
GrantsFOSSA helps improve the overall security of the Internet through activities such as bug bounties, hackathons, and having it sponsored by EU budget.

Fund Request
BountiesA decentralised marketplace for requesting development bug fixes, security audits, etc to the Open Source developer community.

Gitcoin
BountiesGitcoin is the easiest way to leverage the open source community to incentivize or monetize work.

GitFund
SupportOpen source project sponsorship platform for tiered support such as Gold, Silver, Bronze sponsors, etc.

GitHub Sponsors
DonationsAllows the developer community to financially support the people who design, build, and maintain the open source projects they depend on, directly on GitHub.

Gitpay
BountiesAn issue bounty platform for Git-powered projects with an integrated payment system.

Gitstore
PaywallAn online-store-like platform for selling access to public or private repositories, packages, etc.

Goteo
CrowdfundingA collective financing and distributed collaboration platform for projects for giving individual rewards, and generating collective returns.

Hit Chain
CrowdfundingA developer autonomous community that bring together developers, investors and IT experts.

Issue Hunt
BountiesAllows open source project owners to fund Github issues and developers to hunt the issues.

Liberapay
DonationsLiberapay is a recurrent donations platform where people who benefit from free work support creators.

License Zero
PaywallA techno-legal vending machine (platform and tools) for dual-licensed open software.

Lyfevest
SupportConnecting enterprise developers who are using open source with the contributors who are creating open source.

NLnet
GrantsFinancially supporting organizations and people that contribute to an open information society with ideas to fix the internet since 1997.