Microsoft BitLocker - BitLocker is a full disk encryption feature included with Windows Vista and later.
Dynamic Campaigns by Sigstr - Share the most relevant content in every email
Paubox - Paubox provides HIPAA compliant email encryption without the hassle of extra steps.
PushMarket - Automate personalized emails for ecommerce (YC15)
OpenSSH - OpenSSH is a free version of the SSH connectivity tools that technical users rely on.
InboxSDK - First usable API to write Gmail Apps for 1B active users