Grafana - Data visualization & Monitoring with support for Graphite, InfluxDB, Prometheus, Elasticsearch and many more databases
CodeMyUI - Handpicked code snippets you can use in your web projects
Dashing.io - The exceptionally handsome dashboard framework
Codespace - A beautiful cross-platform code snippet manager
Smashing - Smashing is a fork of Dashing (which is no longer maintained), a Sinatra based framework that lets you build beautiful dashboards.
30 seconds of code - JS snippets that you can understand in 30 seconds or less.