The document summarizes 7 tools for a devops stack:
1) Automation tools like Puppet, Chef, and Jenkins are used to automate deployments and configurations.
2) The Marionette Collective allows orchestrating tasks across servers like checking statuses and restarting services.
3) FPM helps create software packages to address issues with packaging dependencies and versions.
4) Logstash is used for centralized logging and shipping logs anywhere while filtering and indexing them.
5) Graphite and Kibana provide visualization and graphing of metrics at scale for monitoring.