It is important to clarify from the outset: the search query you provided (intitle:liveapplet inurl:lvappl and 1=1 guestbook phprar free) appears to be a combination of dork syntax (for Google hacking) and potential vulnerability scanning, rather than a legitimate software package or product name.
This particular string targets legacy web elements, likely from the early to mid-2000s. Here is an exploration of what this query reveals about the evolution of web security and the risks of "ghost" software.
Leo’s guestbook entry from earlier changed.
Old entry: “Hello?” became “You shouldn’t have searched intitle:liveapplet inurl:lvappl.”
The reason these queries are effective is that many "free" scripts from the early 2000s were written without modern security standards. When these scripts remain active on a server: Remote Code Execution (RCE):