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Seelen UI

Free#2 of 39 in Start Menu Customization Software

Seelen UI: A broad, free Windows shell replacement for users who want more than Start menu tweaks. Ranked #2 of 39 in Start Menu Customization Software by our editors (9.1/10); pricing: Free plan; best for free users wanting broad Windows customization.

9.1/10Editor score

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Seelen UI9.1 Visit Seelen UI

At a glance

Editor score
9.1 / 10
Pricing
Free plan
Best for
Free users wanting broad Windows customization
Free plan
Yes
Paid from
Free
Supported Windows
Both
Facts checked
20 Sep 2026

Where it wins
- Free and open source with Windows 10 and Windows 11 support
- Combines Start search, pinned grids, folders, and extensive taskbar controls
- Adds tiling, wallpapers, widgets, previews, and custom Alt+Tab switching
Where it doesn't
- Windows-only, with no support for other platforms
- Shell replacement changes more than Start menu behavior
- Focuses on Windows desktop customization rather than integrations

Our verdict on Seelen UI

Seelen UI is a free, open-source Windows desktop customization application for personal users who want to replace or enhance the default taskbar and Start menu. It supports Windows 10 and Windows 11, and its shell-replacement approach goes well beyond changing the Start button. Users can configure a replacement dock and taskbar, search applications, files, and the web, and organize pinned applications in customizable grids and folders.

Its strongest point is breadth. Alongside Start menu and taskbar controls, Seelen UI includes live window thumbnail previews, custom Alt+Tab switching, automatic window tiling with multiple layouts, virtual-desktop support, and live video or interactive HTML wallpapers. A scriptable toolbar can show CPU, RAM, network, disk, and battery widgets, while desktop clock, media, notification, Wi-Fi, and Bluetooth widgets cover everyday desktop information. This makes it a fit for users who want one Windows layer for navigation, window management, and desktop presentation rather than a narrowly focused Start menu editor.

The trade-off is that the product changes the wider Windows shell, so it may be more involved than a lightweight utility intended only for Start menu styling. Its scope is also centered on Windows desktop customization rather than integrations with other software ecosystems. Choose Seelen UI if you want extensive taskbar controls, custom search, pinned layouts, tiling, widgets, and wallpapers in a free package. Choose a narrower Start menu tool instead if you only want a small visual adjustment or prefer to leave the rest of the Windows desktop unchanged.

Your product? Our editors can test Seelen UI in depth and publish a review, labelled as paid · from $149/mo →

Seelen UI pricing

Plans Free planFree Free to use — no paid tier required for the core job.

See plans on seelen.io

Seelen UI fact sheet

Free plan	Yes
Paid from	Free
Supported Windows	Both
Replacement mode	Shell_replacement
Start button controls	Yes
Custom search	Yes
Taskbar controls	Extensive
Saved profiles	Not verified
Deployment	Desktop
Platforms	Windows
Support	Community
Built for	Solo, Small business (editorial estimate)
Pricing	Free plan
Website	seelen.io
Facts checked	20 Sep 2026

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Seelen UI vs the competition

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Featured on iTechGuides

Seelen UI is listed in our Start Menu Customization Software directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Last updated 7 Oct 2026 · How we research and update