Sumbo is a free, open-source Windows utility that live-mirrors any window using
native DWM thumbnails. Keep a chat, a video, a dashboard, or a game map floating
above your work — with zero impact on the source window (no capture, no injection,
no performance cost to the mirrored app).
Features: region crop, opacity 10-100%, click forwarding, click-through,
size presets and 9-point screen anchoring, profiles, group switching,
overlay (UI-hidden) mode, tray residency, startup update check, and a UI in 18 languages.
Publisher’s description
What is Sumbo?
Sumbo by koprodev is open-source Windows software in the gaming tools category. It ranks 34th by popularity among gaming tools in this catalogue. It is written in C#.
Installation and requirements
The publisher provides MSI installers for 64-bit Windows. It can be installed for the current user only, without administrator rights. It needs Windows 10 or newer. A silent install is possible with the installer’s documented switches. An MSI package is available for deployment with Group Policy, Intune or Configuration Manager.
Popularity and file types
The source code on GitHub (koprodev/Sumbo) has 4 stars. Similar programs include ViGEm Bus Driver, Carnac and HunterPie.
Project description on GitHub: “Mirror any window into a single always-on-top view - crop, opacity, click-through. Free, open-source, no telemetry.”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- MSI package for managed deployment
- Documented silent install
- Installs without administrator rights
Cons
- No native ARM64 build
In short: Sumbo is an open-source gaming tool tool for 64-bit PCs. Administrators can deploy it unattended.
Is Sumbo safe to download?
- The file is served by github.com, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
9DE0F0C5A276C80997428CD792B62A36216C9790FA013DE2F6AAC3E3ACB99666· Open the VirusTotal report for this hash - The link has not been checked yet
- The source code is public
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 1 versions ›| Version | Date | Size | Files |
|---|---|---|---|
| 1.2.0Latest | July 10, 2026 | — | 64-bit MSI |
Install from the command line
Silent install ›winget install --id koprodev.Sumbo -emsiexec /i Sumbo-1.2.0-win-x64.msi /qn /norestartmsiexec /x {444A9D57-F46D-4977-A92F-671DB830A901} /qn /norestartRelated guide: How to use winget: install and update apps
Information
- Publisher
- koprodev
- Category
- Gaming tools
- Licence
- MIT
- Price
- Free
- Source code
- github.com/koprodev/Sumbo
- Written in
- C#
- Requires
- Windows 11 / 10 (Windows 10+)
- Architecture
- 64-bit
- Installer
- MSI
- Version
- 1.2.0
- Released
- July 10, 2026
- Added to the catalogue
- July 15, 2026
- Versions listed
- 1
- GitHub stars
- 4
- Website
- github.com
- winget ID
- koprodev.Sumbo
- MSI product code
- {444A9D57-F46D-4977-A92F-671DB830A901}
Ratings and reviews
No reviews yet. Be the first to rate it.
Alternatives to Sumbo
See all ›-
Open source4.4K ↓ -
Carnac2.6.2A keystroke overlay that shows the keys and shortcuts you press, for presentations, screencasts and learning shortcuts.Open source20.3K ↓ -
Open source★ 1.3K -
Open source★ 1.3K -
Open Capture and Analytics Tool (OCAT)1.6.3The Open Capture and Analytics Tool (OCAT) provides an FPS overlay and performance measurement for D3D11, D3D12, and Vulkan.Open source★ 365 -
Open source★ 1.7K -
Open source★ 303 -
Free★ 64
Frequently asked questions
Is Sumbo free?
Yes. Sumbo is open-source software under the MIT licence.
Is Sumbo safe to download?
The download comes from github.com, which belongs to the publisher; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install Sumbo with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Can Sumbo be installed silently?
Yes. The silent install page lists the exact command for each installer, including msiexec for the MSI package.
Which Windows versions does Sumbo support?
The installer requires Windows 10 or newer and is available for 64-bit.
Does Sumbo run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit version through emulation.
Can I use Sumbo without administrator rights?
Yes, there is a per-user installer that does not need administrator rights.
What are alternatives to Sumbo?
ViGEm Bus Driver, Carnac, HunterPie, CrossOver and Open Capture and Analytics Tool (OCAT). The alternatives page compares them.
