這是一個 excel template，輸入 duration 和 start date 後 task bar 便會自動生成，特點是可避開假期，免費試用版可在以下網站下載。

https://gantt.neocities.org/

This is an Excel template where after entering the holidays, duration and start date, the task bar will be generated automatically. It can avoid holidays. The free trial version can be downloaded from the above website.