The best replacement for journaling is blogging.

The best alternatives to journaling are rated as following:
★★★★★  blogging
★★★  soft updates
★★★  archiving
★★  journalling
★★  archiving exchange 2010
★  transport rules
★  electronic vaulting
★  journaling

Your alternative for journaling is not listed? Suggest!
Speaking about journaling, one probably shouldn't forget about scrapbooking.

Other search terms related to journaling and their ratings are:
★★★★★ scrapbooking
You have in mind a companion for journaling and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of journaling in all years. Click on graph for more.
journaling
blogging
soft updates