Preview file from URL

Google Docs turns into a Universal File Viewer
* UPDATE and workaround: Google Docs Viewer Page, No Longer Available

View contents of ZIP & RAR Files Online before downloading using Google Docs

Extract ZIP from URL

BEST: [Portable] Free Download Manager

http://wobzip.org/

ArchView Mozilla Add-on
** Not available for Firefox 30.0

LoadScout

ZIPSelect
www.muenster.de/~dambergj/archive/zipselect.htm

Also:
Create ZIP from URL
wobzip
+ up to 200MB size
online-convert.com/ (Archive Converter)
- free account limited to 100MB size

Eraser on WIndows 7

Error even if it is run as Administrator

You need to exit the instance of Eraser running in the tray before starting a new instance as an administrator
Source:
www.heidi.ie/forum3/viewtopic.php?f=2&t=5893#p16262

PDF: Save-as without password

www.pdfunlock.com/

Split / combine file via command line

chunk.exe

download from www.oldskool.org/pc/chunk