Play FLI file (Windows, Mac)
QuickTime Player from Apple allows the playback of quicktime movies (.mov) and many other formats:
The new QuickTime Player not only delivers startling quality, but it's easier to use than ever. It requires no set up for content that streams over the network. Instead, QuickTime Player automatically determines your system's connection speed and chooses the highest quality stream for the amount of bandwidth you have available. And if you ever lose a connection while watching streaming video, QuickTime Player automatically reconnects.
Download Apple QuickTime Player
Play FLI file (Linux)
XAnim is a program for playing a wide variety of animation, video and audio formats under X11. It was written mainly for machines running unix(or a unix derivatives), but can also be compiled and run on VAX VMS machines(although without audio support). It has also been ported to the Amiga and to W95/NT.
XAnim supports the majority of the common X11 Visuals. It supports all depths that have a bpp of 1, 8, 16 and 32. Other bpp's are non-standard(although they are legal). NOTE: that the depth indicates how many bits are used to specify the color of a pixel and the bpp indicates how many bits each pixel consumes in memory. For example, a depth 24 Visual usually has a 32 bpp uses 24 bits to specify the color and 8 bits of padding per pixel.
Download XAnim