“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 Information Network (CRIN)

Children and humanitarian work: In chapter 5 [part B] of ICVA's “Growing the Sheltering Tree: Protecting Rights through Humanitarian Action” is “Practices to Promote and Protect the Rights of Children”. This looks at child soldiers, street children etc.

A good resource is EENet, 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. EENET is contributing to the development of inclusive and sustainable education policy and practice by sharing relevant information and experience. It has documents in different languages.

International HIV/AIDS Alliance offer useful materials including a 'resource pack' of materials for NGOs, "Support for orphans and other vulnerable children"

Apne Aap help children affected by trafficking for prostitution. They have a book “The Place Where We Live Is Called the Red Light Area” to bring the stories of children of women in prostitution to the fore, and to understand the feelings and thoughts of these children on topics such as violence, abuse, prostitution, stigma, trafficking, and HIV/AIDS.

Source has sections on early childhood development as well as health issues around children.

SCF, Plan International and other agencies have jointly come up with “Keeping children Safe – a Toolkit for Child Protection”.