ctdl a.k.a content-downloader is a python package with command line utility as well as desktop GUI to download files on any topic in bulk.
ctdl fetches file links related to a search query from Google Search.
Files can be downloaded parallely using multithreading.
ctdl is Python 2 as well as Python 3 compatible.
ctdl can be accessed as a command line utility as well as desktop GUI.