The App-orgdaemon distribution provides the "org-daemon" program, a Tk application which sits in the background and "warns" about appointments found in configured org-mode files. Installation: perl Makefile.PL make make test make install You can use the org-daemon script found in the bin subdirectory directly, without installation. Make sure that at least Perl/Tk is installed. Usage: org-daemon --recheck-interval=3 /path/to/TODO.org & Run "perldoc bin/org-daemon" or "tkpod bin/org-daemon" for complete documentation.