xmbase-grok, formerly just called "grok", is a simple database manager
and UI builder that can -

  *  keep phone and address lists (like a rolodex)
  *  store phone call logs
  *  keep todo lists
  *  manage any other database after simple GUI-driven customization
  *  customized data export, HTML export built in

WWW: http://bitrot.de/grok.html