Seva Bharathi - One of the Best NGO's
SevaBharati is one of the best NGO’s in India. Visit http://www.sevabharathi.org/ for more details. I can attribute part of interest in social work to SevaBharathi.

They have many Good Programs and contribution for them can be made online too. Their basic programmes include:

1) Education:
EKAL VIDYALAYA ( Single Teacher Schools ) :
  This single teacher schools are basically started in remote places of the country. An educated 
person from the village is selected as teacher and all other facilities are provided (like infrastructure 
etc.). A minimum three hours of studies are provided to children who go for work(due to family
obligations) at a time convinient to them. Establishing and running an Ekal Vidyalay needs
Rs.10,000/- (per one SINGLE TEACHER SCHOOL per annum.). Pls contact SevaBharathi if you
are interested in this.

In addition to these 1000's of regular schools are run in cities to villages. Even study/tuition centres
are started in various places for students who are devoid of electricity, study place etc in their 
residence.

2) Health Programmes: Like Mobile clinic, Dispenseries etc.

3) Destitute Homes, Tribal Homes, Homes for Poor etc are started.

4) Self Employment training centres for women

Etc etc. Pls visit http://www.sevabharathi.org/  for more details.