deark
Development
File conversion utility for older formats
debianutils
Development
Miscellaneous utilities specific to Debian
debugbreak
Development
Break into the debugger programmatically
decasify
Development
Utility for casting strings to title-case according to locale-aware style guides
deck
Text Editors
Creates slide deck using Markdown and Google Slides
decker
Input Method
HyperCard-like multimedia sketchpad
decompose
Virtualization
Reverse-engineering tool for docker environments
deepline
Development
CLI for Deepline data enrichment and durable plays
defaultbrowser
Browsers
Command-line tool for getting & setting the default browser
define
Translation
Command-line dictionary (thesaurus) app, with access to multiple sources
defuddle
Archivers
Extract article content and metadata from web pages
deheader
Development
Analyze C/C++ files for unnecessary headers