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Skip to contentv86 emulator shell — bring your own ISO (emulator deferred).
Full tool — runs in your browser. No sign-up required.
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v86 emulator shell — bring your own ISO (emulator deferred).
Developer utilities should be fast, copy-friendly, and predictable. Paste or drop input, get a reliable result — no CLI install required.
Use this free Retro PC whenever you need a browser-local result without creating an account.
Open the Retro PC page — no registration required.
Paste, upload, or configure your input.
Review the live result and adjust options.
Copy or download the output to your device.
Processing is designed to stay in your browser session unless a mode explicitly notes a network call.
LocalThis tool processes data locally in your browser. Tentaco does not receive your file contents for this mode.
v86 emulator shell — bring your own ISO (emulator deferred). Open the tool in your browser — no account or install required.
Yes — runs locally in your browser.
No — processing runs locally in your browser. Your files and inputs do not leave your device unless the tool explicitly uses the network.
File Studio online — free in your browser
Inspect, compare and transform any file locally in your browser. Tentaco File Studio: review input and get an instant result — free, no sign-up.
Terminal Playground online — free
xterm.js terminal with a tiny fake learning shell.
Torrent Metadata online — free
Inspect .torrent and magnet metadata only — no downloads.
SWF Player online — free
Play Flash SWF files locally with Ruffle WASM.
JSCAD Keychain online — free
Parametric keychain or box — export ASCII STL.
Document Diff online — free
Compare two Office documents and highlight changes.
Night Sky online — free
Astronomy view with SunCalc and an illustrative star field.
PPTX Builder online — free
Build a simple PowerPoint presentation locally.