Project homepage: http://sourceforge.net/projects/gtksourcecomple/
Source code hosting: http://github.com/chuchiperriman/gtksourcecompletion/tree/master
Gnome live page: http://live.gnome.org/GtkSourceCompletion
GtkSourceView and GtkSourceCompletion integration: http://live.gnome.org/GtkSourceView/GtkSourceCompletion
GtkSnippets: Library for store, manage and "autoparse" code snippets.
Gedit-gsv-plugin: Gedit plugin to add previously written words (auto)completion, open documents completion and recent documents completion (Show a list with the documents and when you select one, it is opened in gedit).
Gedit-gsp-plugin: Gedit plugin to add snippets completion to gedit. It uses GtkSnippets library to manage the snippets. The snippets library supports "inplace" variables replacement and this plugin make use of that.
Gedit-sc-plugin: It's a Gedit plugin that uses ctags to add (auto)completion of C symbols, members completion and GOTO features (you select a proposal and the definition file is opened and set the cursor on the symbol position). It is only a prototype, it is not an stable plugin. I am developing it to see the GtkSourceCompletion features and the power of the library. Perhaps in a future I will do a real C (auto)completion plugin...
Vtg: Amazing Gedit Plugin to add autocompletion support for vala source code