geeks
Apps here require a trunk of time to catch up so generally not considered capable for common users. But we shall see its value in specific occasions.
There isn't too much to introduce this. I belive most of us have known how powerful it can be in designing:
Adobe Acrobat DC, Adobe After Effects, Adobe Animate, Adobe Audition, Adobe Bridge, Adobe Captivate, Adobe Character Animator, Adobe Dreamweaver, Adobe Edge Code, Adobe Edge Reflow, Adobe Encore, Adobe Fireworks, Adobe Fuse, Adobe Illustrator, Adobe InCopy, Adobe InDesign, Adobe Lightroom, Adobe Muse, Adobe Photoshop, Adobe Prelude, Adobe Premiere, Adobe Scout, Adobe SpeedGrade
Alacritty 
A cross-platform, GPU-accelerated terminal emulator.
amWiki
amWiki is a wiki doc system based on JavaScript, relying on Atom editor and applied with MarkDown tags.
aria2 
A lightweight multi-protocol & multi-source, cross platform download utility operated in command-line. It supports HTTP/HTTPS, FTP, SFTP, BitTorrent and Metalink.
The HTTP/2 web server with automatic HTTPS
Chocolatey
A package manager for Windows.
cmder
Portable console emulator for Windows.
ConEmu 
Customizable Windows terminal with tabs, splits, quake-style and more.
A complete, cross-platform solution to record, convert and stream audio and video.
Git is a free and open source distributed version control system designed to handle everything from small to very large projects with speed and efficiency.
A command-line utility to download videos from YouTube.com and other video sites.