https://projects.propublica.org/nonprofits/ is a great American nonprofit resource:
New Incentives in particular seems poised to spend much more after large ~Givewell cash grants
Ranked cost-effective public health interventions:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7142580/ (high income-country policies: food, tobacco, alcohol, etc.)
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5552255/ (LMIC policies: medicine, condoms, food, etc.)
Diet advice since food policy tops both lists:
https://cidev.uky.edu/kentuckyhealthnews/2022/02/14/a-healthier-diet-could-add-years-to-your-life-study-says-more-than-a-decade-in-your-20s-and-eight-or-nine-years-even-at-age-60/
Most people view farm animals as serving a purpose, whereas animal cruelty is criticized more when more unnecessary. That's why moral progress is made in fashion, poaching, and animal-fighting sports and why veganism should focus more on food waste and traditions like egg tosses and egg decorating: https://www.vox.com/future-perfect/22890292/food-waste-meat-dairy-eggs-milk-animal-welfare Omnivores can respect farm animal sacrifices more, which is a useful mindset shift
@Peter Wildeford @Matt_Lerner interested in similar. This in-depth analysis' was a bit strict in my opinion looking at file-level criteria:
https://www.metabase.com/blog/bus-factor
These massive projects were mostly maintained by 1 person last I checked a year ago:
https://github.com/curl/curl/graphs/contributors
https://github.com/vuejs/vue/graphs/contributors
https://github.com/twbs/bootstrap/graphs/contributors
https://github.com/laravel/laravel/graphs/contributors
https://github.com/pallets/flask/graphs/contributors
https://github.com/expressjs/express/graphs/contributors
https://github.com/redis/redis/graphs/contributors
https://github.com/tiangolo/fastapi/graphs/contributors
https://github.com/lodash/lodash/graphs/contributors
https://github.com/psf/requests/graphs/contributors
https://github.com/babel/babel/graphs/contributors
https://github.com/mastodon/mastodon/graphs/contributors (seemingly improved since)
https://github.com/BurntSushi/ripgrep/graphs/contributors
https://github.com/FFmpeg/FFmpeg/graphs/contributors
https://github.com/gorhill/uBlock/graphs/contributors
https://github.com/evanw/esbuild/graphs/contributors
I'd love to be able to maintain more polished current data
Bus routes also seem cheaper, quicker implemented, lower profile politically, and more historically ridden than rail: https://www.researchgate.net/figure/1-US-transit-ridership-by-year_fig1_367860713
In America, dining services influence far more meals than vegans' personal consumption
Aramark, Compass Group, etc. each serve billions of meals annually, and even the largest individual correctional facilities, hospital campuses, school districts, public universities, baseball stadiums, etc. each serve millions of meals annually to largely captive audiences