Songlink is a free service to search and share any song and let others listen to it on YouTube, Spotify, Deezer, Apple Music, or Google Music in one click.
AnyFormat is a free service to convert any file to PDF, DOCX, TXT, RTF, EPS, RTF, HTML, etc., and save converted file to PC in a single click. No sign up.
EmailThis service helps to save any webpage/article to read it later directly from your email account. Works for all email services (Gmail, Outlook, etc.).
SpeedCoder is a free service that offers online typing practice for programmers. You can practice typing in C, C++, Perl, Java, Ruby, Python, PHP, etc.