Gkrellm-gtodo is a gkrellm plugin that lets you organize and track tasks and todo items. Requires: Gtk+-2.0 (or above), Glib 2.0 (or above), Gkrellm 2.1.7 (or above) I could test this ONLY on x86 (should go also on other platforms supported by gkrellm2). Suggested location: x11-plugins/gkrellm-gtodo/
Created attachment 37948 [details] Gkrellm plugin that manages a todo list
Sorry, but upstream appears to be dead. If you can fix SRC_URI, I'd be happy to add it.
Websites of the author are not reachable for now. I don't think this project is still developed.