I use jrnl http://jrnl.sh/ http://jrnl.sh/ It supports tags, text files, date filters, I can use my own editor, it's open source, multiplatform and even support

I use jrnl http://jrnl.sh/ http://jrnl.sh/ It supports tags, text files, date filters, I can use my own editor, it's open source, multiplatform and even supports encryption. Oh yeah, and it's super minimalistic and can be used directly from the terminal.