Easily extract clean audio from YouTube videos

An elegant video player to watch any video format

Download HD video, audio & subtitles from YouTube

Easily edit, convert and resize large/4K videos

Write notes, saving web links, store documents

Skip sponsorships on YouTube

Powerful open-source office suite

A custom dark style for each website

Write and connect notes anywhere

Powerful, fast & lossless audio editing tool

An electronics design automation suite

A tag editor developed for Mac OS X users