I have found Charity Entrepreneurship’s research useful for identifying high-impact charity ideas that people in the Philippines could potentially start. Their top charity ideas and cause area research also help me identify and research potentially pressing problems in the Philippines that people could contribute to.
Founders Pledge’s research is also useful, and I especially like their climate change and mental health reports. I believe both charities still have room for more funding.
Dear Brian, thank you for the really helpful reply. That’s good info and really useful. (Also FWIW I suggest posting it as an answer to the main question above rather than in the comments as it would be more visible there).