Lot of NGOs and INGOs we been hearing are getting enough fund and they are not mobilized properly right now, may be they will be mobilized in the future as we need. The main problem in Kathmandu and all affected areas are food, water, shelter, sanitation etc. If you have somebody back home whom you can trust, then send money to them via money-gram, western union, and ask them to buy basics and distribute to the person in need. For checking them, you can ask them the receipts , pictures and videos distributing them. Of course people can cheat if they want, that's why I said send it to people whom you trust. Like Nishant322 said, you can trust to bibeksheel Nepali group. You can check their work at https://www.facebook.com/bibeksheelnepali?fref=ts
and their website is http://leadnepal.com/earthquake/