This is an announcement for chimera 1.63. Chimera is a X-based World-Wide Web browser for UNIX machines. Chimera uses the Athena widget set and a modified form of the NCSA HTML widget. Chimera supports forms, inline images, TERM, SOCKS, proxy servers, Gopher, FTP, HTTP, and local file accesses. Chimera can be extended using external programs. New protocols can easily be added and alternate image formats can be used for inline images (e.g. postscript, JPEG, ...). It is available for anonymous ftp at ftp.cs.unlv.edu in the directory /pub/chimera. Check out the URL http://www.unlv.edu/chimera/ for a partial list of mirrors and other information. The author has compiled and run chimera on Sun Sparc SunOS 4.1.x IBM RS/6000 AIX 3.2.5 DEC Alpha OSF/1 V3.0 Linux It should run on anything with X11R[3-6], imake, and a C compiler.