ScanTailor - Scan Tailor is an interactive post-processing tool for scanned pages.
PuTTY - Popular free terminal application. Mostly used as an SSH client.
K2PDFOPT - K2pdfopt (Kindle 2 PDF Optimizer) is a stand-alone program which optimizes the format of PDF (or...
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
Briss - Cross-platform application for cropping PDF files in a simple and fast way via a GUI.
iTerm2 - A terminal emulator for macOS that does amazing things.