Donating your time or money to a charitable cause is a great experience. It feels good to know you are making a difference in the world, especially when you are supporting a cause that you are truly passionate about. But with so many charity organizations out there, it can be difficult to find one that you are really excited to get behind. Not to mention, it’s best to find one that you know is actually putting your money to good use. Here are five great resources to help you make an informed decision.

1) GiveWell

This is a great resource for finding a charity working in the field of international aid and global health. GiveWell is dedicated to finding outstanding opportunities for donations. They even publish the full details of their analysis to help donors decide where to give. They give several top recommendations for a few charities that they deem to be highly effective and likely to benefit greatly from additional funding.

2) Philanthropedia

Philanthropedia crowdsources research on nonprofits by surveying experts such as foundation professionals, researchers, and nonprofit senior staff. Using their expert advice, Philanthropedia has been able to create a comprehensive list of recommended charities that deal with a wide range of causes: international, national, local, disaster relief, arts, culture, violence against, and climate change.

3) Charity Navigator

Charity Navigator has rated 6,000 of America’s largest charities, in terms of their financial health, accountability, and transparency. You can use their searchable database to find a nonprofit that matches your passion and that you can trust. New ratings are added each month, so if you do not find what you are looking for right away, check back in at a later date.

4) Universal Giving

Universal Giving helps to connect people with volunteer and giving opportunities worldwide. They rank charities according to a trademarked Quality Model, which includes Patriot Act compliance, financial vetting, management review, nonprofit status verification, and several other criteria. You have the ability to sort through volunteer and giving opportunities by continent or type of project, making it very easy to find something you can really get behind.

5) Bright Funds

Bright Funds combines data from all the resources above to build a fund that targets six key areas: environment, education, water, poverty, health, and human rights. Bright Funds makes it easy for you to find organizations focused on the issues that matter most to you. You have the ability to customize your fund so that you allocate resources to the areas you are most interested. For example, you could allocate 25% to water, 40% to health, and 35% to water.