VisualSitemaps - Autogenerate visual sitemaps in seconds.
Zabbix - Track, record, alert and visualize performance and availability of IT resources
Codrops Blueprints - Free website concepts ready to implement or modify
Datadog - See metrics from all of your apps, tools & services in one place with Datadog's cloud monitoring as a service solution. Try it for free.
Octopus.do - Build your website structure in real-time and rapidly share it to collaborate with your team or clients. Start prototyping websites or apps instantly.
Prometheus - An open-source systems monitoring and alerting toolkit.