Okta - Enterprise-grade identity management for all your apps, users & devices
ManageEngine ADAudit - ManageEngine ADAudit is a real-time windows active directory auditing tool.
Auth0 - Auth0 is a program for people to get authentication and authorization services for their own business use.
Spectrum - Browser-based app to visualize the frequencies of an audio file.
OneLogin - On-demand SSO, directory integration, user provisioning and more
Heroku - Agile deployment platform for Ruby, Node.js, Clojure, Java, Python, and Scala. Setup takes only minutes and deploys are instant through git. Leave tedious server maintenance to Heroku and focus on your code.