11 tools for your devops stack summarizes key tools for a devops workflow including:
Jenkins for continuous integration; FPM for packaging; Logstash for centralized logging; Graphite for metrics and monitoring; Puppet and Vagrant for configuration management and environment provisioning; and tools like Mcollective and Kibana to help with automation, monitoring and visualization. Sharing code, environments and experiences through open source is also emphasized as important for a collaborative devops culture.