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DTL Software — June 2026

A tribute to Digital Equipment Corporation (1957 – 1998)

Network & System Tools

Open-source tools for network discovery, diagnostics, and Windows infrastructure inventory.

Tool Description Version Page
DTLknowsWhy Expert diagnostics and causal analysis for Windows v2.1.0 View ›
DTLsaysWhat Full Windows system inventory from the command line v1.0 View ›
NetDTL Agentless real-time network inventory v1.0-1 View ›
GitDTL Tkinter GUI for Git, 14 menu actions v1.0 View ›
Didier DTL Morandi didier.morandi@gmail.com MIT License
01

Project 01 / 04

DTLknowsWhy

Expert diagnostic engine and causal analysis for Windows

  • Windows workstation inventory and local snapshot generation
  • Network, DNS, name resolution and Windows services analysis
  • SMB client and server diagnostics
  • Remote snapshot collection via DTLknowsWhy-Agent
  • Remote HTTP agent installable as a Windows service
  • Local / remote workstation comparison
  • Detection of configuration, SMB, DNS and identity differences
  • Expert engine based on causal rules
  • Rich TXT and HTML reports, in French and English
  • Distinct visualisation of local and remote systems
Python 3.10+ Windows 10/11 DTLknowsWhy-Agent HTTP 5050 Windows Service WMI SMB DNS Causal analysis HTML reports FR / EN
Reference Manual User Guide
DidierMorandi/DTLknowsWhy v2.1.0 stable
02

Project 02 / 04

DTLsaysWhat

Full Windows system inventory, command-line driven

  • 20 collection categories: system, hardware, memory, disks, GPU, network, software, services, processes, startup, security, updates, drivers, users, tasks, shares, events, performance, virtualisation
  • Local or remote collection (--computer)
  • Dual automatic output: plain-text report and navigable HTML report
  • HTML report with sidebar and per-section anchor links
  • Inspired by the WHAT utility by Stanley Rabinowitz (DEC VAX/VMS, 1980s)
Python 3 WMI psutil PowerShell Windows Registry Windows 10/11 HTML reports
Reference Manual User Guide Sample report
DTLsaysWhat.zip (12 KB) v1.0 stable
03

Project 03 / 04

NetDTL

Agentless, lightweight, real-time network inventory

  • CIDR-range network discovery via Nmap (SSE streaming)
  • Host inventory: status, ping, open ports, MAC, vendor
  • NetBIOS identification and WMI descriptions (Windows hosts)
  • Patch panel management (port ↔ host mapping)
  • Network diagnostics: ping, traceroute, DNS, port scan
  • Editable host profile: OS, switch port, comment
  • CSV inventory export
  • Dark web interface, no external JS dependencies
  • Built-in HTTP Basic authentication
PHP 8.x MySQL / MariaDB Nmap XAMPP LAMP Server-Sent Events PDO
Reference Manual User Guide
DidierMorandi/netdtl v1.0-1 stable
04

Project 04 / 04

GitDTL

Tkinter-based Git GUI with 12 built-in actions

  • Repository selection via folder browser
  • Real-time Git status display
  • One-click Add, Commit, Push, Pull
  • Branch management: create, switch, merge, delete
  • Remote repository cloning
  • Local repository initialisation
  • Commit history (log)
  • Modified file diff
  • Stash and pop changes
  • Windowed interface, no command line required
Python 3 Tkinter Git subprocess Windows / Linux / macOS
README
DidierMorandi/GitDTL v1.0 stable