TicketTaker 1.0 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus. The actual developer of this free software for Mac is David Norman. The application lies within Developer Tools, more precisely Webmaster Tools.
From the developer:
Ticket Taker is a developer productivity tool for any one who's workflow involves work tickets (Jira, Github, etc). This app makes it easy to track multiple streams of work or to focus on a single ticket. Touchbar integration puts the Ticket Title, URL and Ticket ID within easy reach every time so you no longer need to switch through all your tabs to find that one story you were working on.
You may want to check out more software for Mac, such as Url Extractor X, WebPics or Browsealoud, which might be related to TicketTaker.