StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
4k Video Downloader - 4K Video Downloader is a software program that helps people download video files from sites such as Facebook, YouTube and Dailymotion.
Pingdom - With website monitoring from Pingdom you will be the first to know when your website is down. No installation required. 30-day free trial.
Video DownloadHelper - Browser extension to download videos from the Web
UptimeRobot - Free Website Uptime Monitoring
youtube-dl-gui - A cross platform front-end GUI of the popular youtube-dl written in wxPython.