Open engineering tools from 3389
Small, focused Windows utilities from real infrastructure work. Portable
.exe, no installer, no telemetry, source included.
- Portable
.exe - No installer
- No telemetry
- Source included
- SHA-256 verifiable
- MIT licensed
AI Status Monitor
Desktop console for the official status pages of every major AI provider.
- 18 AI providers monitored out of the box
- 7 / 30 / 90-day SLA with interval merging and trend arrows
- Windows toast plus Slack / Teams / Discord webhooks
DiskMap Lite
Portable disk-usage reports for Windows admins.
- Tree-map visualisation with folder drilldown and breadcrumb navigation
- Top folders + top files with category tags and cautious recommendations (never "safe to delete")
- HTML / PDF / CSV / JSON export — all stay local
AssetCheck Lite
Local-first workstation assessment for Windows admins.
- Storage reliability from SMART/NVMe with transparent, fully explained scoring
- Per-component second-hand value from a local heuristic model
- Windows 11 / TPM / Secure Boot / UEFI / disk-encryption readiness
Latest updates
Most recent releases across the catalogue. Each entry links to the full release history on the tool’s detail page.
NetLens · v1.5.14 2026-05-28
Two-phase scan fixes
Deep / All-Ports scans now build on the initial discovery instead of appearing to restart — open ports, services, SMB shares, printer supplies and security findings carry through to the full sweep, the scan duration no longer resets, and the sweep skips ports already covered. The Custom Ports field now appears immediately when its preset is selected, with an inline format hint. github.com/3389ro/netlens.
NetLens · v1.5.13 2026-05-28
Device fingerprinting, security findings & large-scan stability
New Security findings layer — curated CVE / EOL heuristics from observable banners and version hints, in the details pane and HTML report (heuristic hints only, never a confirmed CVE). SMB dialect detection (1.0 / 2.x / 3.x) plus anonymous share enumeration. Fingerprinting widened to Roborock / Xiaomi, Ubiquiti / UniFi, VMware ESXi, HPE iLO, Netgear, Yealink, Thecus / Synology and TP-Link / MikroTik, with a dedicated Model column (grid, HTML, CSV) that reads the exact model only from manufacturer-driven read-only endpoints — never a raw page title. Label printers now read over Zebra SGD (TCP 9100). O(1) result accumulation and a faster Stop on big ranges. Removed an incorrect SMB1 / EternalBlue finding that could fire on ordinary SMB 2.1 hosts; report / export hardening. github.com/3389ro/netlens.
NetLens · v1.3.0 2026-05-26
Native Win32 rewrite + scan-engine fork
From-scratch native Win32 UI on a forked + extended C++ scan engine. Single 2.5 MB statically-linked NetLens.exe with PerMonitorV2 DPI, static CRT, zero runtime DLL deps. UDP discovery widened from 6 to 8 probes (added SQL Browser, LLMNR, IPMI). New Printer-MIB module reads vendor + model + serial + per-cartridge supply levels. Enrichment overhaul: fewer false positives, Netgear-switch detection, 3CX recognition, anchored hostname rules. Reliability fixes from internal + external audits (restart race, clear_results race, cancel-to-100% jump, UTF-8 codepoint truncation, NBNS hostname promotion, DNS thread cap). HTML report redesign with Printer supplies + UDP discovery sections. Loads on Windows 7 / 8 / 8.1 / 10 / 11 and Server 2012+. CLI subsystem removed — scripted scans link the engine’s C ABI directly. github.com/3389ro/netlens.
DiskMap Lite · v1.0.1 2026-05-25
First public release on GitHub
Portable disk-usage reporting tool for Windows admins. WPF GUI + CLI build, both self-contained .NET 8 executables. Tree-map + folder drilldown, top folders / top files with category tags and cautious recommendations (never "safe to delete"), HTML / PDF / CSV / JSON exports, 7 UI languages, XxHash3 duplicate detection. Reporting only — no Delete button, no admin elevation, no network, no telemetry. github.com/3389ro/diskmap-lite.
AssetCheck Lite · v1.0.1 2026-05-25
First public release on GitHub
Local-first, offline workstation assessment tool for Windows admins. WPF GUI bundling the entire .NET 8 runtime + JSON knowledge base. Five-area assessment: Storage Health (SMART/NVMe with transparent scoring), Market Value (per-component offline heuristic), Upgrade Advice (keep/upgrade/replace), Security Readiness (Win11/TPM/Secure Boot/UEFI/disk-encryption status), Hardware Details. HTML/JSON/CSV export, 7 UI languages. Local-only — no telemetry, no network, no cloud account, no background agent. BitLocker recovery keys are never read or exported. github.com/3389ro/assetcheck-lite.
AI Status Monitor · v1.0.3 2026-05-14
Uptime-showcase fallback for empty Statuspage archives
Statuspage providers whose incidents.json is empty (like MiniMax) now have SLA computed from the per-day uptime bars scraped from the status page HTML. Net effect: real 7/30-day numbers instead of "Insufficient history".
Built from real operational work
Each utility here started inside a paid engagement — LAN diagnostics on a customer site, uptime monitoring for an AI integration, incident-response tooling for a regulated client. Polishing them for public release is how the team keeps the muscle.
Read the code, ship the binary
Every release ships a complete source snapshot in the ZIP and a verifiable SHA-256 for the binary. Build it with the included script and you get the same bytes we did.
No telemetry, ever
The tools never phone home, never collect analytics, never ship usage data anywhere. The only network traffic is the work you ask them to do. Local state, when present, lives under %APPDATA% on the machine that runs the tool.
Portable, no admin needed
Single .exe you can drop on a USB stick or a jump host. No installer, no services, no Run as administrator. Use them on locked-down workstations.
MIT licensed
Read, fork, study or adapt. LICENSE.txt (MIT) and NOTICE.txt (third-party attributions) ship inside every source ZIP. Pull what you need into your own products — commercial use included.
Trademarks & brand names. All third-party names, marks and logos shown on this page or on the tool detail pages — including vendor names visible in NetLens screenshots (derived from the publicly available IEEE OUI registry) and AI provider names referenced by AI Status Monitor (read from each provider’s own public status feed) — are the property of their respective owners. 3389 Software Outsourcing SRL is not affiliated with, sponsored by, endorsed by, or in partnership with any of these companies, products or services. See each tool’s detail page for the full notice.
Like how we build these? We can build bigger systems too.
These tools are a public preview of how the 3389 team thinks — native code where it matters, no telemetry, reproducible builds, real documentation, long-term support. If you have an operational problem that needs the same engineering bar (custom monitoring, integration platforms, infrastructure tools, line-of-business apps), talk to us.