Mailfence - Easy to use end-to-end encrypted email. Secure and private email.
GlockApps - G-Lock Apps is an interesting tool that might seem simple to some, but is quite essential to most online marketers.
Usetiful - Fight user churn with great user onboarding. Interactive product tours and smart tips significantly improve your user retention.
dmarcian - Safeguard your email from abuse
eclipso - A safe home for people and their data.
Vetter - An online suggestion box for employees