Here are some of the Brave verified charity and non-profit initiatives that are out there. While there definitely are others these are just a handful that interest me personally.

codetoinspire.org [potentially unverified*] - Teaching women in developing countries to code, which empowers them to step into careers and be role models for the next generation of women.

pencilsofpromise.org [Uphold*] - Building schools, supporting teachers, and creating hygienic water infrastructure in developing countries.

monafoundation.org [Gemini*] - Supporting children's education and gender equality in economically disadvantaged communities.

fightforthefuture.org [Uphold*] - A collective of activists trying to ensure that technology is used as a tool for empowerment, not oppression.

watsi.org [potentially unverified*] - Crowdfunding life-saving medical treatments in low-income countries.

rainforestfoundation.org [Uphold*] - Saving South American rainforests through community training and advocacy.

khanacademy.org [Uphold*] - Providing free online education to everyone, at their own pace.

freecodecamp.org [Uphold*] - Free online training in many aspects of computer programming.

* Site's linked exchange - if your browser is currently linked to an exchange you can only tip those sites that are linked to the same exchange. Some changes were made to the requirements to appear verified and not all sites seem to have fulfilled those requirements.