Best sites on data Encryption

Data encryption is no longer just the domain of secret service or DOD agents. With the reliance on online services and mobility, it has become increasingly important for home and businesses to secure their data and information. For example, instead of copying data on a USB and risk loosing it, on may want to encrypt the content on it in case the stick is lost. Important business information may need to be encrypted on a computer at work so it is not "compromised". Here is a list of websites that offer software and information on encryption. Feel free to add yours here if it is related.