DbVisualizer - DbVisualizer is the universal database tool for developers, DBAs and analysts.
BuiltWith - Find out the technology behind websites
Navicat - Powerful database management & design tool for Win, Mac & Linux. With intuitive GUI, user manages MySQL, MariaDB, SQL Server, SQLite, Oracle & PostgreSQL DB easily.
Wappalyzer - Wappalyzer is a technology profilers and leads data provider. Create lists of websites and contacts that use certain technologies.
DtSQL - DtSQL is one of the best and perfect database management tools for the all kind of databases that are currently being used across the globe.
What CMS - WhatCMS.org looks at a variety of factors within a webpage to determine what CMS a website is using.