organiser

Noun

• a lightweight consumer electronic device that looks like a hand-held computer but instead performs specific tasks; can serve as a diary or a personal database or a telephone or an alarm clock etc.

• a person who brings order and organization to an enterprise
  • she was the organizer of the meeting
    

• someone who enlists workers to join a union

Related words

• Synonyms: 
  personal digital assistant , PDA , personal organizer , personal organiser , organizer , arranger , labor organizer