textvr, German 
Several options: FOSS funds, foundations, grants, venture capital.
A few takeaways
- On GitHub Sponsors, where the speaker works, 60% of the funding comes from individuals
- Majority of maintainers for critical FOSS projects is paid full-time
- Grant money from governments usually goes into new projects
- Venture capital is focussing more on Open Core
- Problems: Sponsoring from companies is unstable and related to economic conditions, e.g. in 2023