Windows desktop customization can involve changing the Start menu, modifying taskbar behavior, or simply giving the taskbar a different visual shape. StartIsBack and RoundedTB both interact with the Windows taskbar, but they are designed for different customization goals. StartIsBack focuses on restoring a classic Windows shell experience, while RoundedTB concentrates on taskbar margins, rounded corners, segmentation, and dynamic sizing.
This comparison examines StartIsBack vs RoundedTB across features, performance, compatibility, requirements, use cases, pros, and limitations. The goal is to explain the practical differences without declaring either application an overall winner.
StartIsBack Overview
StartIsBack is a Windows shell enhancement utility designed to recreate a traditional Windows Start menu and taskbar experience. Its official website describes integration with Windows and features based around the Windows 7-style Start menu and taskbar.
For Windows 10, StartIsBack++ provides features such as taskbar skins, custom jump lists, centered taskbar icons, larger taskbar icons, taskbar color controls, Start menu skins, Start button customization, and translucency settings.
The developer maintains different products for different Windows generations, including StartIsBack++ for Windows 10 and StartAllBack for Windows 11.
Key StartIsBack Features
- Windows 7-style Start menu
- Start menu skins
- Start button customization
- Taskbar skins
- Taskbar color controls
- Centered taskbar icons on supported versions
- Larger taskbar icons
- Custom taskbar jump lists
- Start menu shortcuts
- Start menu and taskbar translucency
- Advanced configuration options
- Lightweight shell integration
StartIsBack therefore combines Start menu functionality, taskbar customization, and classic Windows navigation.
RoundedTB Overview
RoundedTB is a taskbar customization utility focused primarily on the visual shape and layout of the Windows taskbar. Its project description centers on adding margins, rounded corners, and segments to taskbars.
The tool provides basic controls such as taskbar margin and corner radius. Its more advanced functionality includes independent margins and dynamic mode on Windows 11, which can resize the taskbar based on the number of icons and create a dock-like appearance.
RoundedTB is therefore much more narrowly focused than a classic shell replacement or Start menu customization utility.
Key RoundedTB Features
- Adjustable taskbar margins
- Custom corner radius
- Independent margins
- Segmented taskbar appearance
- Dynamic taskbar mode on Windows 11
- Dock-like taskbar behavior
- Taskbar positioning customization
- Lightweight visual customization
- Non-permanent taskbar modifications
- Open-source development under GPL-3.0
StartIsBack vs RoundedTB: Feature Comparison
| Feature | StartIsBack | RoundedTB |
| Primary purpose | Classic Windows shell and Start menu customization | Taskbar shape and layout customization |
| Classic Start menu | Yes | No |
| Windows 7-style Start menu | Yes | No |
| Start button customization | Yes | No |
| Taskbar customization | Yes | Yes |
| Taskbar skins | Yes | No |
| Taskbar margins | Limited/indirect | Core feature |
| Rounded taskbar corners | Not its primary focus | Yes |
| Corner radius control | No | Yes |
| Independent margins | No | Yes |
| Dynamic taskbar sizing | Not its primary purpose | Yes on supported Windows 11 configurations |
| Split/segmented taskbar | Not its primary focus | Yes |
| Jump-list customization | Yes | No |
| Taskbar transparency | Yes | Not its central feature |
| Open source | No | Yes |
| Windows 10 | Yes, through StartIsBack++ | Support varies by feature |
| Windows 11 | StartAllBack is the related product | Yes, with Windows 11-focused functionality |
| Main strength | Shell functionality and classic navigation | Modern taskbar appearance |
Start Menu and Shell Functionality
The largest difference between the two tools is the scope of their customization.
StartIsBack
StartIsBack changes the Windows shell experience by providing a classic Start menu and additional controls for navigating applications, documents, system locations, and shutdown options.
Its taskbar features complement the Start menu by allowing users to change skins, icon positioning, colors, translucency, and jump-list behavior.
As a result, StartIsBack can affect both how Windows is used and how parts of the shell look.
RoundedTB
RoundedTB does not provide an alternative Start menu. Instead, it works primarily with the existing Windows taskbar.
Its basic configuration revolves around two important controls:
- Margin: creates space around the taskbar.
- Corner Radius: controls how rounded the taskbar corners appear.
The project’s documentation also describes independent margins for more precise control.
RoundedTB is consequently more focused on taskbar geometry and presentation than Windows navigation.
Taskbar Appearance
Taskbar styling is the area where the two applications overlap most.
StartIsBack can apply taskbar skins, customize colors, adjust translucency, and change taskbar icon arrangements on supported Windows versions.
RoundedTB approaches the taskbar from a different visual direction. Instead of providing a complete shell skin, it changes the taskbar’s dimensions and shape. Users can introduce visible margins, increase or decrease corner radius, and use independent margins to create different layouts.
This distinction means that StartIsBack emphasizes classic taskbar styling, while RoundedTB emphasizes modern geometry and spacing.
Dynamic Taskbar Features
RoundedTB has a particularly distinctive feature in its Windows 11 functionality: Dynamic Mode.
According to its documentation, Dynamic Mode automatically resizes the taskbar based on the number of icons, producing an appearance similar to a macOS Dock.
StartIsBack has taskbar customization features such as centered icons and dynamic transparency on supported Windows versions, but its core purpose remains the restoration and customization of the classic Windows shell.
The two therefore use different methods to change the taskbar experience.
Performance and Resource Considerations
Both applications are designed as relatively focused desktop customization utilities, but their resource profiles depend on the features being used and the Windows environment.
StartIsBack describes itself as lightweight and states that it consumes minimal system resources without running additional processes or services for its core operation.
RoundedTB primarily changes taskbar layout and appearance. Its project is designed around taskbar modifications rather than continuous media playback or large background services.
However, advanced taskbar behavior can introduce compatibility considerations. RoundedTB’s documentation notes that Dynamic Mode can occasionally require the taskbar alignment to be changed or a window moved to force the layout to update.
Therefore, performance and stability should be considered together with the Windows version and other taskbar-modification utilities installed.
Compatibility and Requirements
StartIsBack Compatibility
StartIsBack is distributed in Windows-specific editions:
- StartIsBack for Windows 8
- StartIsBack+ for Windows 8.1
- StartIsBack++ for Windows 10
- StartAllBack for Windows 11
The official site currently lists StartIsBack++ 2.9.21 for Windows 10, released December 10, 2025, with fixes for newer Windows 10 updates and multiple-display configurations.
This version-specific approach allows the developer to tailor features to the shell implementation of each Windows release.
RoundedTB Compatibility
RoundedTB has historically supported Windows 10 and Windows 11, although some features have different limitations depending on the Windows version.
The project’s documentation specifically distinguishes Windows 10 and Windows 11 behavior. For example, Dynamic Mode is identified as a Windows 11 feature, while Split Mode on Windows 10 has additional restrictions, including limitations around secondary taskbars and taskbar position.
Users should therefore check the behavior of individual features rather than assuming every RoundedTB capability works identically across Windows versions.
Installation and System Changes
StartIsBack integrates directly with Windows and provides its own configuration interface. The developer states that it does not require administrator rights for installation in its normal configuration and that its core operation does not require additional background services.
RoundedTB takes a different approach. Its documentation states that it makes no permanent changes to Windows; if problems occur, ending RoundedTB and restarting Explorer or rebooting can clear the temporary modifications. It can also be configured to run at startup from its tray interface.
This distinction is useful for users who want to understand how deeply each utility integrates with the desktop environment.
Open Source and Licensing
The projects also differ in their development and licensing models.
StartIsBack is proprietary commercial software. The developer distributes it with a license and trial system.
RoundedTB is an open-source project available on GitHub under the GPL-3.0 license.
This creates a clear distinction between the two projects in terms of source availability and licensing.
Multi-Monitor Considerations
Multi-monitor configurations can affect both applications, but their approaches are different.
StartIsBack includes taskbar and shell functionality designed to work with multiple displays, and its December 2025 Windows 10 release specifically mentions fixes related to multiple-display configurations.
RoundedTB also has multi-taskbar considerations. Its documentation notes that certain Windows 10 Split Mode functionality is limited to the primary monitor, while Dynamic Mode can introduce behavior differences across taskbars and monitors.
For multi-monitor setups, compatibility therefore depends not only on the application but also on the Windows taskbar configuration and the particular feature being used.
Use Cases
StartIsBack is suited to users who want to:
- Restore a classic Windows Start menu
- Recreate a Windows 7-style workflow
- Customize the Start button
- Change taskbar appearance
- Customize taskbar jump lists
- Adjust taskbar translucency
- Change taskbar icon positioning
- Use classic shell functionality alongside Windows 10
- Customize both navigation and appearance
RoundedTB is suited to users who want to:
- Add rounded corners to the taskbar
- Create visible margins around the taskbar
- Produce a floating-taskbar appearance
- Experiment with dock-like taskbar layouts
- Use Dynamic Mode on supported Windows 11 setups
- Create segmented taskbars
- Fine-tune individual taskbar edges
- Customize taskbar geometry without replacing the Start menu
Pros and Limitations of StartIsBack
Pros
- Full classic Start menu experience
- Windows 7-style navigation
- Start button customization
- Taskbar skins
- Taskbar color and translucency controls
- Custom jump lists
- Centered taskbar icons on supported versions
- Lightweight design
- Version-specific Windows support
- Built-in shell configuration options
Limitations
- Primarily designed around older Windows shell versions
- Different Windows generations require different products
- Windows 11 uses the related StartAllBack product
- Proprietary licensing
- Major Windows updates can affect shell compatibility
- Its broader feature set may be unnecessary for users who only want rounded taskbar corners
Pros and Limitations of RoundedTB
Pros
- Focused taskbar customization
- Adjustable margins
- Adjustable corner radius
- Independent margin controls
- Dynamic taskbar mode on Windows 11
- Dock-like taskbar appearance
- Segmented/split taskbar options
- Open-source GPL-3.0 project
- Does not make permanent system changes
Limitations
- Does not provide a classic Start menu
- Does not replace Windows shell navigation
- Some features behave differently between Windows 10 and Windows 11
- Dynamic Mode can occasionally require taskbar refreshes or adjustments
- Some advanced modes have multi-monitor restrictions
- Compatibility with other taskbar modification tools may vary
- Certain taskbar behaviors are constrained by Windows itself
StartIsBack vs RoundedTB for Different Customization Goals
The distinction between the two tools becomes clearer when considering the desired end result.
StartIsBack is designed for users who want to change the Windows shell experience. Its Start menu, Start button, taskbar skins, jump lists, and navigation features collectively create a more traditional Windows interface.
RoundedTB is designed for users who primarily want to reshape the existing taskbar. Its margins, rounded corners, independent edge controls, and Dynamic Mode provide a more modern visual approach without replacing the Start menu.
Because their feature sets overlap only partially, the two applications represent different customization categories rather than identical alternatives.
Key Differences at a Glance
- Start menu: StartIsBack provides extensive classic Start menu functionality; RoundedTB does not.
- Taskbar: Both modify the taskbar, but their approaches differ.
- Rounded corners: RoundedTB makes corner-radius control a central feature.
- Classic interface: StartIsBack focuses more heavily on traditional Windows navigation.
- Taskbar margins: RoundedTB provides dedicated margin controls.
- Dynamic layout: RoundedTB provides Dynamic Mode for supported Windows 11 configurations.
- Licensing: StartIsBack is proprietary, while RoundedTB is open source under GPL-3.0.
- System changes: RoundedTB states that it makes no permanent changes, while StartIsBack integrates more deeply with Windows shell functionality.
Conclusion
StartIsBack and RoundedTB both customize the Windows desktop, but they operate at different levels. StartIsBack focuses on the classic Start menu, Windows shell, taskbar functionality, and traditional navigation, while RoundedTB concentrates on taskbar shape, spacing, rounded corners, segmentation, and dynamic sizing.
The most significant differences involve customization scope, taskbar controls, Start menu functionality, Windows compatibility, licensing, and system integration. StartIsBack provides a broader classic-shell experience, whereas RoundedTB provides more specialized controls for reshaping the taskbar.
Neither application is a universal substitute for the other. Their different feature sets make them relevant to different Windows personalization goals, depending on whether the priority is a traditional shell experience or a modern, customized taskbar layout.