Free web-based tool to query (csv, xls, json) data files with SQL

Hi,

I created https://simplql.com/ to make it simple to query common data files like CSV, JSON, and Excel. Usually, when I needed to make queries to some data export files from marketing tools, CRM, etc., I built a quick node.js script or imported them to a local DB.

Simplql is an in-browser private tool that makes SQL queries fast as the data is stored in the memory. The tool doesn't upload your files - everything stays local and therefore adding a file with 100k rows is almost instant. This also makes it private and secure to use with sensitive data.

Hope you find it useful!