Simply put, creates a new save every time you quicksave or autosave, as if you had pressed escape, gone to the save menu and clicked 'new save'.
For those of us who love to save early and save often.

Discussion Thread:
http://www.elderscrolls.com/forums/index.php?showtopic=375750&st=20#


History
--------
v1.3 build 13
Quick fix to bug with corrupted saves by extending the default time the program waits before attempting to copy a save from 500ms to 5 seconds. Added an extra option in the menu system so you can specify this yourself for increased compatibility, you hopefully shouldnt need to change it though.

v1.3 build 5
Changed how the charname box works, it tried to autodetect each time before which was a silly method. Now it only does it if
the ini file is not present (the first time you run the program). Whatever you enter into the character name box is now saved
into the ini file for the next time you run incsaver.
Fixed a silly bug with the way cyclical saves works for using both auto and quicksave, before it got confused because it
could create both CIQ and CIA saves with the same numbers, so if you set cyclical saves to 50 it could create upto 100 saves
instead of the 50 you requested. Now it will only create the number of saves you say, on each loop if it say found CIQ10 when
you were doing autosave 10 (CIA10) it will deleted CIQ10 before saving to keep everything in order.
Minor bug fix in how autosave works, I didnt realise that it does the autosave while the new area is loading not after, when
the text appears. This sometimes, though rarely, led to empty autosaves as it was copying a file that was not yet saved. The
program now waits a bit longer before copying, which seems to have fixed it. Im sure I could check for the filesize or use
some other method but I dont want to edit/read the file in any way when oblivion is writing to it.

v1.2 build 10
Changed how it searches for names, now uses the last modified save file to autodetect the character name (should work better with cyclical saves). Now searches based on regular expression so its very unlikely you could name a save that would be caught
by its search string unless you deliberately named it IQ100 - Blah - Random Number.ess.
Options and save format now support all non-alphanumeric characters except for leading and trailing whitespace and the non-windows characters: \/:*>?|

V1.2 Added 'cyclical' saving, now you can set it so that it will incrementally save on a cycle of however many saves you want,
going back to 1 when it reaches that number instead of writing 3000 of the things like it normally does.

(from the readme)
Usage:

Run incrementalsaver.exe from anywhere you like, unless you have modified your oblivion save directory
from the default oblivion uses. If so, just put the .exe file in that directory and the program will realise (it looks for
quicksave/autosave.ess in whatever directory its in and defaults to that if either is found)

Run the program before starting Oblivion each time, this will provide you with an options screen.
Each option has a detailed tip to explain what it does and its pretty simple.

When the program states it is waiting for oblivion to start, run oblivion.
Now, every time you quick/autosave (whatever you chose) the program will copy that save.
You can check thats its working by quicksaving when you enter the game and going into the load menu,
a new save with a custom name should have appeared.

When you are finished with the game, the program will auto-exit by default.