“Rights without power are meaningless” is a statement that needs thinking about in the context of children.
Save the Children believes that children need concrete recognition of their rights as members of their families and communities, and citizens of their states. In most societies children have no formal voice at all, and their physical and psychological vulnerability has often left them susceptible to a denial of their rights, including the right to actively participate in wider society. A clear statement of children's rights makes this kind of exclusion more difficult.
The big websites are:
Unicef
Save the Children
Child Rights International Network (CRIN)
Unicef has a section on the Convention on the Rights of the Child Children, which works to change the way children are viewed and treated – i.e., as human beings with a distinct set of rights instead of as passive objects of care and charity.
Orphans and other vulnerable children: See Unicef's Protection, Care and Support for Children affected by HIV and AIDS
A good resource is Enabling Education Network, which works with NGOs in Africa and Asia especially helping those with limited access to basic information and resources. It recognises that education is much broader than schooling and is contributing to the development of inclusive and sustainable education policy and practice by sharing relevant experience. It has documents and videos, some in several languages.
Apne Aap help children affected by trafficking for prostitution. They have resources including “The Place Where We Live Is Called A Red Light Area” to bring the stories of children to the fore, and capture their feelings and thoughts on topics such as violence, abuse, prostitution, stigma, trafficking, and HIV/AIDS as a result of their mothers or themselves being trafficked.
Disability and inclusion: Source has various resource sections, including Education.
Keeping Children Safe was established by SCF, Plan International and other humanitarian relief and development charities in the context of emerging reports that children were being abused by aid and development workers in emergency camps and within their own organisations. It promotes a set of robust and comprehensive International Child Safeguarding Standards that all organisations can and should follow.
When children are abducted the links of their citizenship get broken. These links need to be repaired in order for them to become active, valuable and meaningful members of the community again. Margaret Angucia's thesis (308 pages), Broken Citizenship: Formerly abducted children and their social reintegration in northern Uganda, differs from other publications in that it presents the subject from the perspectives of the children themselves and the community.