Box - Box offers secure content management and collaboration for individuals, teams and businesses, enabling secure file sharing and access to your files online.
Mimecast Gateway - Mimecast Gateway is a SaaS-based email security solution that uses sophisticated, multi-layered detection engines and intelligence to protect email data and employees from malware, spam, advanced threats and zero-day attacks.
Soonr - Soonr is a cloud-based document storing and file sharing system for the small and medium-size businesses.
dmarcian - Safeguard your email from abuse
Nubo - A self-hosted file sharing application in Haskell.
Hornetsecurity - Hornetsecurity offers you comprehensive, integrated managed e-mail security services.