Internet Download Manager, or IDM, is a software which is used to manage downloads on a system. IDM can be used to speed up downloads, using multiple download queues and batch downloading. It also supports major download protocols, such as HTTPS, FTP, or MMS.
You can customize the settings of Internet Download Manager. This how-to will get into how you can change the menu language to the one of your choice.
Modify the Menu Language of Internet Download Manager
Open IDM. Click View > Language. Next, choose the language of your choice: