Vivaldi and 1DM

I have been using Brave desktop for quite a long time. But using mobile version recently. And found that it is very good. But I was in dilemma after downloading a Download manager for android, 1DM. I was very astonished so much feature than any other Browser in Android ecosystem. Like, importing and exporting bookmark from/to txt format. Capture audio/video. View source of the page by one click. Force context menu. Hope Developers have a look