try InfoSelect
It's a PIM/freeform note taker. OUtlines, forms, calendars, lighting fast search, kitchen sink and then some. I worked on version 2. it's 7.0 now. Works on Windows only, though.
Suffice it to say that the entire InfoSelect was developed inside InfoSelect. We implemented everything from syntax coloring to version control to bulk data export into file system. It got better since then.