Flat

by Agorav2.3.3

Last updated Jun 8, 2026

Project flat is the Web, Windows and macOS client of Agora Flat open source classroom.

Install with winget

$ winget install --id netless-io.flat --exact --version 2.3.3

Run in Command Prompt, PowerShell, or Windows Terminal. Prompts for any agreements.

Silent install command for Flat

Flat uses EXE (NSIS). The silent install switches are /S.

One-line silent install (x64)

Flat-x64-2.3.3.exe /S

See the full silent install reference for Flat →

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Installers · v2.3.3

Architecture	Type	Scope	Install	Download
x64	EXE NSIS	-		Direct

Copy a command tailored to that specific architecture, type, and scope - useful when winget would otherwise pick a different default.

Security

1 known CVE via NVD

medium6.3Fix in v5.0.1CVE-2020-36632affects before 5.0.1Dec 25, 2022
A vulnerability, which was classified as critical, was found in hughsk flat up to 5.0.0. This affects the function unflatten of the file index.js. The manipulation leads to improperly controlled modification of object prototype attributes ('prototype pollution'). It is possible...
Patch

Source: NVD, updated 2h ago. Patch status is best-effort: NVD's fix version is compared against the latest version in winget, but the two version formats don't always align. Confirm with the vendor advisory before treating any specific build as safe.

See a CVE that affects your fleet? Push the patched version to Intune in one click with Pckgr.

Frequently asked questions

How do I install Flat on Windows?

Open Windows Terminal, PowerShell, or Command Prompt and run: winget install --id netless-io.flat --exact --version 2.3.3. winget downloads the installer from Agora and runs it. Requires Windows 10 (1809+) or Windows 11.

How do I install Flat silently for unattended deployment?

Add --silent and accept the agreements upfront: winget install --id netless-io.flat --exact 2.3.3 --silent --accept-package-agreements --accept-source-agreements. This is the variant Intune, Configuration Manager, and other deployment tools should use.

What are the silent install switches for Flat?

Flat uses EXE (NSIS). Run the downloaded installer with: Flat-x64-2.3.3.exe /S. The silent switches are /S.

How do I uninstall Flat via winget?

Run: winget uninstall --id netless-io.flat --exact. Add --silent for unattended uninstalls. winget will use the registered uninstaller from Flat's Apps & Features entry.

Is Flat free?

Flat is distributed under https://github.com/netless-io/flat/blob/main/LICENSE. Refer to the publisher for the full license terms - Wingetly itself does not charge for installation.

Does Flat work on Windows 10?

Yes, as long as your Windows 10 build supports winget (1809 or newer). winget ships with App Installer on Windows 10/11 and pulls Flat directly from the publisher.

How do I keep Flat up to date?

Run winget upgrade --id netless-io.flat --exact, or winget upgrade --all to update everything winget tracks. We index 10 versions of Flat from microsoft/winget-pkgs.

Recent versions

2.3.3latest
1.8.4
1.8.3
1.8.2
1.8.1
1.8.0
1.7.0
1.6.1
1.6.0
1.5.3