Features

One app that does the IT work

Every tool is deterministic, explained in plain language, and reversible where it matters.

🧩 Drivers

Full driver inventory with versions, dates and the official update source per device.
Online version check against the Microsoft Update Catalog — flags what's truly out of date.
Auto Update downloads and installs selected updates, batching them into a single restart, and resumes after a reboot.
Honest results — if Windows/OEM keeps a driver (common on laptop GPUs), it tells you and points to the vendor tool.
Back up & restore drivers (export to Documents) and an Auto-Update log.

One-click app installer via winget — popular apps grouped by category, each with a short description.
Search the whole winget catalog to find and install any app.
Installed-apps audit — sizes, install dates, last used, and "large & unused" recommendations, with Uninstall / Open folder.
Update all your apps at once — finds newer versions of everything installed and updates them in one click (via winget).

Local network scan — every device on your network with vendor, hostname and open services.
Diagnostics — multi-stream download speed, latency and Wi-Fi signal/link rate.
Firewall — live connections per app, and one-click block/allow of any app's internet access (with confirmation). It never changes Windows Firewall on its own.
Wi-Fi passwords — see every saved Wi-Fi network on this PC and its password.
DNS benchmark — test popular public resolvers and find the fastest for your connection.

Alerts — recent Event Log errors and low-disk warnings, each with a one-click web search for a fix.
Security — antivirus, firewall, UAC, BitLocker and pending-restart status with recommendations.
Startup — programs that launch with Windows; disable or re-enable them (kept in the list either way).
Restore points, Performance (CPU, RAM, top memory users, S.M.A.R.T. disk health, temperatures), Battery health, Windows Update status with an in-app install, and Cleanup (temp, update cache, shader cache, recycle bin).
Security hardening — checks SMBv1, Remote Desktop, AutoPlay, the Guest account and UAC, and fixes each in one click.
Reliability score and a crash (BSOD) analyzer that names the likely cause of blue screens.
Storage analyzer (biggest folders & files) and a Changes log of everything Tendvane did, with one-click undo.

Duplicate-picture finder — matches by exact size then a SHA-256 content hash, so only byte-identical images are grouped.
Real thumbnails including iPhone HEIC, with a full-screen viewer.
Safe delete — keeps one of each group, sends the rest to the Recycle Bin, and shows reclaimable space.

126 tweaks from popular projects, deduplicated and grouped (Privacy, Performance & gaming, File Explorer, Taskbar & Start, Appearance, Windows Update, System) — all reversible, all localized.
Registry cleaner for broken references left by uninstalled programs, with a registry backup/restore.
Debloat (experimental) — remove pre-installed apps individually, disable telemetry scheduled tasks, enable optional Windows features, and clean Windows Installer leftovers (to the Recycle Bin).

Symptom-based repair — pick the problem (apps crashing, no internet, Windows Update stuck, printer, Store, wrong icons) and Tendvane runs the matching built-in Windows fix.
End-of-life warning — shows your Windows version and warns when it has reached, or is near, the end of security updates.

Back up your files — copy your Documents, Pictures and Desktop to a USB drive or folder you choose.
Full system report — a one-page summary of this PC's hardware and Windows, exported as HTML.
Settings profile to carry your tweaks to another PC, plus an optional weekly health report.