Basics
Snorkel is a node.js app that builds queries and visualizes their results in your browser. Snorkel works with multiple backends and is built for quickly understanding what is going on inside large running systems.
In snorkel, each sample is part of a dataset (aka table). Snorkel's primary analysis is about running queries on a single dataset over a time range and visualizing the data using multiple views. The main queries snorkel uses are table, time series, distributions and raw samples. Using these queries, snorkel can create multiple coherent views on data that let you iteratively understand what is going inside your datasets.
Some example datasets that snorkel can be used for are: advertising impressions, page visits, server performance monitoring, fitness tracking and any other event based instrumentation you can think of.