Calibre is my only ebook management software now. She is my book shelf keeper.
1. Convert other formats to .mobi, .epub, .azw formats which are suit for Kindle Touch. Reading pdf format on the Kindle Touch is very frustrating.
2. Schedule periodical magazine downloading. The magazines I am reading are:
Foreign Policy, IEEE Spectrum, The Atlantic.
I know that Calibre has a bunch of other functions. However, I am satisfied now.