ANSI C source for CheapGlk, version 1.0.6, a stdio (i.e. lowest common denominator) implementation of Glk 0.7.5, written by Andrew Plotkin.
Source code for CocoaGlk version 1.0.4, by Andrew Hunter. CocoaGlk is a client/server Glk framework for OS X.
MS-DOS implementation of Glk 0.4 (17oct98), written by Matt Kimball
Source code for MS-DOS Glk (17oct98), by Matt Kimball
GlkLoader 0.3.2, by Joe Mason. A Glk library which dynamically loads another Glk library specified on the command line, allowing the user to choose an X or console version of a Glk application at run-time rather than compile-time.
GlkOte 2.3.6, a Javascript library for creating interactive fiction, based on the Glk API, by Andrew Plotkin.
GlkDOS 0.19.1, a Glk 0.6.1 library for MS-DOS using the DJGPP compiler (Curses, Allegro, PC-BIOS, and Unix ncurses display systems), by L. Ross Raszewski.
Source for Unix Curses based implementation of Glk 0.7.4, version 1.0.4, written by Andrew Plotkin.
Source for the GlkTerm Glk implementation, version 1.0.4, modified by Alexander Beels to support Unicode input and output when linked against Ncursesw.
Source for GTK+ 2.0 based implementation of Glk 0.61, version 0.3, written by Evin Robertson.
A Java Native Interface binding for XGlk, allowing Glk applications to be written in Java, written by John Elliott.
CodeWarrior library package for a Macintosh Glk 0.61 library, version 0.87, written by Andrew Plotkin.
Source for Macintosh implementation of Glk, written by Andrew Plotkin.
NanoGlk 0.0.1, a Glk implementation based on SDL, designed for portable devices with small screens. Written by Sebastian Geerken.
Source code for Pocket Glk 0.5, a PocketPC 2002 and Windows Mobile 2003 implementation of Glk 0.61, written by Stark Springs.
A Python wrapper for the Glk API, for making Glk library calls from Python scripts. Version 0.1.1, written by Joe Mason.
RemGlk version 0.3.1, a remote procedure call implementation of the Glk API 0.7.5, by Andrew Plotkin.
Windows implementation of Glk 0.7.5, version 1.53, written by David Kinder.
Source code for Windows Glk, version 1.53, written by David Kinder.
XGlk Library version 0.4.11, by Andrew Plotkin. An X Window implementation of the Glk API 0.61. ANSI C source code.