You should also consider seed funding. If the Open source project is in good shape and has a viable business model, you could seed fund and take some equity.

I am from India, and it is really difficult to raise even a small amount of money here. The deal I was offered by a Seed Investment firm was - give us 5% stake (for 0 investment) and we will prepare you for seed funding. This is how bad it is here: I have working compilers and a client.

What I was looking for from seed funding was about Rs 50,000 a month which is about USD 1000 a month, so that I can work full time on my project and move it forward.