perf - Perf is a simple app monitoring solution paired with meaningful alerts.
Raygun - Raygun gives developers meaningful insights into problems affecting their applications. Discover issues - Understand the problem - Fix things faster.
Treo - Treo is the page speed monitoring tool that helps your customers from obtaining a faster web experience.
Snare - Snare is well known historically as a leader in the event log space.
Deppbot - Continuous Updates - Based on your configured schedule, deppbot will run bundle update on your Ruby app and send the result as a Pull Request to GitHub.
Kafka - Apache Kafka is publish-subscribe messaging rethought as a distributed commit log.