librosa : librosa is a python package for music and audio analysis. It provides the building blocks necessary to create music information retrieval systems.
Scrapy : Scrapy is a fast high-level screen scraping and web crawling framework, used to crawl websites and extract structured data from their pages. It can be...
readability-lxml : In few words, Given a html document, it pulls out the main body text and cleans it up. It also can clean up title based on latest readability.js code.
Isso : Isso – Ich schrei sonst – is a lightweight commenting server written in Python and JavaScript. It aims to be a drop-in replacement for Disqus.
sh (previously pbs) is a full-fledged subprocess interface for Python that allows you to call any program as if it were a function