ASHI NGO uplifts underprivileged kids and women. You can read about them on their website!
Udaan, LECIN, Shakti Shalini, and many more.
There's LECIN (Let's Educate Children in Need)
You may help them by sponsoring a child's education at 300 per month, or you may help them in other ways. Do check out the same.
I used to volunteer at Nai Disha in Bhavani Kunj. They help in tutoring underprivileged children. You might want to check it out!