File Information Resources
FileInfo – The File Extensions Database
The Source for File Extension Informaiton
There are many ways to come to FILExt: search engine, various programs, referrals but, basically, you came here to search for the name of a program that uses a particular file extension. To do that use the search box. For more information continue reading.
Thanks to years of research and help from our loyal visitors, we now have one of the world’s largest and most detailed databases of file extension information, covering multiple operating systems from Microsoft’s Windows, Apple’s OS X and all variations of Unix to those used on the latest mobile devices and phones.
Metasearch engine for file extensions – Find info about unknown file extensions or filetypes lightning fast! 
This table of file signatures (aka “magic numbers”) is a continuing work-in-progress. I had found little information on this in a single place, with the exception of the table in Forensic Computing: A Practitioner’s Guide by T. Sammes & B. Jenkinson (Springer, 2000); that was my inspiration to start this list in 2002. See also Wikipedia’s List of file signatures. Comments, additions, and queries can be sent to Gary Kessler at

C Library Resources
— This manual (libc, aka glibc) is available in the following formats
The GNU C Library project provides the core libraries for the GNU system and GNU/Linux systems, as well as many other systems that use Linux as the kernel. These libraries provide critical APIs including ISO C11, POSIX.1-2008, BSD, OS-specific APIs and more. These APIs include such foundational facilities as open, read, write, malloc, printf, getaddrinfo, dlopen, pthread_create, crypt, login, exit and more.
The C language provides no built-in facilities for performing such common operations as input/output, memory management, string manipulation, and the like. Instead, these facilities are defined in a standard library, which you compile and link with your programs. The GNU C Library, described in this document, defines all of the library functions that are specified by the ISO C standard, as well as additional features specific to POSIX and other derivatives of the Unix operating system, and extensions specific to GNU systems.
The Open Group Base Specifications Issue 6, IEEE Std 1003.1, 2004 Edition

Back Again

Not that anyone is really paying attention, but the site is fixed and works again. I admittedly was quite a bit lazy in looking into it, bur finally spent some time, and the site appears operational again. That means I can start posting content that no one seems to really look at right now. yeah!!!!!!!!!!!!!!!!