Total Commander is a Windows based file management program with the good plugin system.

MyPhoneExplorer is a phone management software for your desktop PC.

MiXplorer is a fast, smooth, beautiful, reliable and fully-featured file manager with a simple and intuitive user interface.

ES File Explorer (File Manager) is a free and full-featured file manager.

File Expert is an advanced file explore on Android. It manages files, photos, music, videos, docs and APKs efficiently on both local and Clouds.

JotterPad is a plain-text word processor available on Android.