I'm volunteering for a non-profit organization based in Chicago that collects community support for global initiatives through the collection of digital signatures and related supporter created profiles & data. We often have to transfer large files, more than several gigabytes, to organizations located throughout the world. The problem is some of these organization are in countries with a weaker IT infrastructure and the large file transfers can take a very very long time or the transfer completely fails due to the unstable network in some countries. Mailing hard drives or using most free transfer products isn't possible because we need to ensure that we are securing our supporters data, privacy, and expediency. Does anyone know of such a software product that could solve this issue. As we are a non-profit, we focus on spending on our ground game and don't have extensive funds to commit towards software. Any suggestion or advice would be greatly appreciated.