I use wyrd nearly daily and have been doing so for years. Works across all my linux and Mac machines and all I need to do is pass around a text file. Combined with automated email message reminders, Remind and wyrd have been far better to use than Apple's iCal, the Thunderbird calendar plugin, Emacs cal and appt., and the multiple on-line calendars/organizers I've tried. Thank you for keeping wyrd available and for the bug fixes!
An open, cross-platform journaling program.
A scientific plotting package.