Apache Tomcat - An open source software implementation of the Java Servlet and JavaServer Pages technologies
Swatches - A fun and accurate color picker for the real world
Microsoft IIS - Internet Information Services is a web server for Microsoft Windows
Color Hunt - Curated collection of beautiful colors, updated daily
LiteSpeed Web Server - LiteSpeed Web Server (LSWS) is a high-performance Apache drop-in replacement.
ColorSnapper - The missing color picker for Mac.