#GivingTuesday is a growing annual fundraising tradition (now in its fourth year) started by the U.N. Foundation and New York's own 92Y. Last year the hashtag holiday inspired an estimated $46 million in donations to charity, according to NPR. If you're joining the philanthropic fun today and want to help out closer to home, here are a number of local organizations that could always use your support—most donations to these groups are tax-deductible:

New York Civil Liberties Union: The NYCLU offers legal support to those whose civil rights and civil liberties are under attack; its advocacy issues include LGBT rights, racial justice, and voting rights, among many others. All donations made today will be matched up to $10,000. Donate here.

Gay Men's Health Crisis: This year, #GivingTuesday coincides with World AIDS Day; in that spirit, consider donating to the city's first provider of HIV/AIDS prevention and support. GMHC offers medical treatment, counseling, legal services, and job placement, among other services, and is an active player in working to end the AIDS epidemic. Donate here.

Housing Works:Housing Works is another organization providing a range of services to homeless and low-income New Yorkers living with HIV/AIDS. You can support Housing Works by patronizing its thrift shops, bookstore cafe, or catering company—or make a donation today, in honor of both #GivingTuesday and World AIDS Day.

Black Movement-Law Project: BMLP's network of lawyers and activists provides legal support to communities that are protesting police brutality and racism. The group trains legal observers, offers jail support, and provides Know Your Rights trainings to activists and organizers. Though based in Arizona, BLMP has a national network of civil rights lawyers, and is seeking donations to expand its reach.

Brandworkers: This organization fights for the rights of workers in New York City's food and retail sweatshops; many of these workers are immigrant workers of color with limited English who work long hours, often at rates under the minimum wage. You can support Brandworkers with a one-time donation, or subscribe for a recurring gift.

596 Acres: To help preserve green space in the City, 596 Acres gives residents the tools to turn abandoned neighborhood lots into parks and gardens. Today is an especially important day to help this organization: December 1 is its deadline to raise $40,000 to hire a full-time program manager and continue its grassroots work in New York.

Sylvia Rivera Law Project: Founded in the memory of Sylvia Rivera, a transgender activist who spent her life in New York, SRLP provides legal services and other resources for low-income transgender, intersex, and gender non-conforming people, with the goal of ensuring that people can self-determine their gender identity and expression without facing discrimination and violence. Donate here.

NARAL Pro-Choice New York: In the wake of this weekend's horrifying shooting at a Colorado Springs Planned Parenthood, consider helping the fight for reproductive justice nationwide. NARAL's New York chapter is currently focused on passing a comprehensive contraceptive coverage act and fighting against "crisis pregnancy centers," among other projects. Donate here.

New York Public Library: For #GivingTuesday, if you make a donation of $50 or more to the NYPL, you can have a loved one's name and a personalized message put inside a book that will circulate for years to come.