Quiver
Quiver is a notebook built for programmers. It lets you easily mix text, code, Markdown and LaTeX within one note, edit code with an awesome code editor, live preview Markdown and LaTeX, and find any note instantly via the full-text search.
YouTube has become a very popular video sharing platform but it still does not include a download option for when you want to have offline access to specific media files. iTubeDownloader is a small Mac app designed to remedy the situation.
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