Are you talking about CPM scheduling project phases, or project scheduling within your company? For Critical Path stuff I have used phoenix, and excel. For operations in general I am now using Evernote in lieu of my phone calendar or the good ol pad and pen. I have only been using ever note for the last month, but I am already really beginning to appreciate it because it is so versatile, you can use hand writing or your phone keyboard, everything from your phone is also on your computer via their website, they have a lot of different functions, alarms, photo attachment ect, I schedule topsoil sales through it, meetings, bid submissions, you can ad a milestone date/time whenever you want, and as many as you want. I am only scratching the surface, but the more I do the more efficient it becomes.