Extract recursively using 7-Zip

If you are using Linux, you can use

find -iname \*.zip -exec unzip {} \;

(after installing unzip)

In Windows, you can use

FOR /F "usebackq" %a in (`DIR /s /b *.zip`) do 7z.exe e %a

Assuming that you have 7z.exe in your PATH. Run that command in folder where you want to (recursively) unzip all zip files.

Use the open source Multi Unpacker tool for Windows. It requires you having installed WinRAR, but other than that it's actually pretty versatile...

With 7-Zip you can issue the following command to extract all files to your current base folder:

7z e -an -air!*.zip -r

So if you have

.
+ \ folder
    + \ file.zip

the contents of file.zip will end up in . with all archive folders removed.

Or use the x option to extract including the subfolders of the archive.

You may be able to play with the -o option to have each zip file extracted in the subfolder it's in, though I often find I need all files to be put into one location instead.