Evernote has had some incredible success on iPhone and they’re bringing their services to BlackBerry, free of charge on App World.
Evernote gives BlackBerry users a feature-rich note taking experience that includes the ability to instantly capture text notes, snapshots, and audio memos at anytime. The data is stored within Evernote then synchronized from your BlackBerry to your computer where you can organize and search through the data.
Evernote for BlackBerry is free on App World.
[ED NOTE: Sorry guys, OS 4.6+ only.]