Convenient to test applications, or even surf the internet in any seat (malicious scripts n will not (d) impact on your computer) and in any confidentiality (historical l, internet cache and cookies are s intercept by the sand tray and are not s registered on your hard disk).
Sandboxie allows also to check your e-mail in any seat mail since potential viruses will not be able to infect your computer.
Note that this test n version is not e limit in its s functionality.