Diary

Well if you use Microsoft, MS Word and Excell will allow this.

If Linux, try Open Office for similar tools.

As for a dated manager, you could use any of the common CRM solutions, Maximizer, Act, GoldMine etc.

Or this Journal download may work for you, 45 days free then $39.95:
http://www.davidrm.com/

Or this one offer a trila and there are several purchase options from $19.99
http://www.alpharealms.com/journal/

I would say learning to build a MS Excell workbook would be cheap and a good learning experience too, but there are many other downloadable options from a simple search for "Free daily journal software"

If you are looking for a cheap and easy way to journal/log activities with automatic dating then you can use Microsoft Notepad.

Open a new session of notepad

Type .LOG (enter text exactly as shown, if typed in lower case the file will not operate correctly)

Save and close the file

Each time you open the file it will generate a time/date stamp at the head of your entry.

Take at look at MS One Note. A trial version is available for download. See link below for more information.

http://www.microsoft.com/office/onenote/prodinfo/default.mspx

Dalton

as well as what Oz said, try looking for time managment / calendar software.

hundreds of options available.
if linux there are 3 at least with the distro.
( Mr Project [ GNOME targeted] }
( Korganiser [ KDE targeted ] )
( Open Ofice Org [ can't remember what thier project / time management tool is called } )