Desktop Application Development Services: Desktop App Development Company

Updated September 2026 · Written and maintained by the Progression Agency strategy team

Progression Agency provides desktop application development services for Windows and macOS: internal tools, point-of-sale and kiosk software, engineering and data applications, and cross-platform desktop apps built from one codebase. Our desktop app development services and desktop software development services cover new builds, rewrites of aging tools and cross-platform ports.

What is desktop application development?

Desktop application development is designing, building and distributing software that runs directly on a computer’s operating system, with access to files, devices, printers, USB hardware and full processing power, often alongside a web or mobile companion.

Most business software belongs in the browser today; the desktop still wins for kiosks and point of sale, lab and engineering tools, media processing, offline field work and anything that must talk to local hardware. See custom software development for the wider picture.

Are desktop apps still relevant?

Is desktop app development dead? No. Are desktop apps still relevant? For work that needs direct access to files, USB or serial devices, printers, GPUs or large local data, and for tools that must keep working offline or inside a locked-down network, a desktop application is still the practical choice. What has changed is that many products are now split: a web app for most users and a desktop app for the work that needs the machine. Someone who spends the whole working day in one tool is well served by software for the desktop, since keyboard shortcuts, multiple monitors and instant response pay back every hour.

Desktop development services

Projects we are most often asked to build.

Windows application development

Native Windows applications in .NET (WPF or WinUI) for business and industrial use; see .NET development.

Windows application development services: WPF, WinUI 3 and MSIX packaging

As a Windows app development company, Progression offers Windows app development services and Windows desktop app development for business, engineering and industrial teams. WPF development fits data-heavy business screens, since WPF is part of current .NET and runs on Windows only. Microsoft recommends WinUI 3 for new native Windows desktop applications, and .NET MAUI is the option when one codebase has to reach beyond Windows.

MSIX packaging is Microsoft’s modern Windows package format: it gives an application a clean install and uninstall, updates that download only changed blocks, and a required digital signature, and the Microsoft MSIX overview lists Intune and Configuration Manager as supported deployment routes. We package and sign Windows builds as MSIX or MSI to match the format your IT team deploys.

These Windows application development services also cover replacing or refactoring aging WinForms tools, as described under legacy desktop modernization, and every build is quoted after a written scope.

macOS application development

Native Mac applications in Swift and SwiftUI with proper notarization and App Store or direct distribution. Good Mac app design follows native conventions such as menus, keyboard shortcuts and window behavior, and custom Mac app development lets a business build its own process into that familiar frame.

Cross-platform desktop apps

One codebase for Windows, macOS and Linux with Electron, Tauri or .NET MAUI when a web-technology UI fits. An Electron app suits a team whose interface already exists as a web app, and the desktop shell adds what a browser tab cannot: local files, attached devices and offline use.

Kiosk, point-of-sale and hardware-connected software

Locked-down interfaces that drive printers, scanners, scales, payment terminals and sensors.

Legacy desktop modernization

Replacing or refactoring aging VB6, WinForms or Access applications without stopping the business.

Companion web and mobile apps

Desktop software paired with a portal or mobile app on a shared backend.

Replacing or refactoring aging VB6, WinForms or Access applications without stopping the business.

Cross-platform desktop application development

Cross platform desktop application development means building once and shipping to Windows and macOS, and often Linux. The common routes are Electron, which bundles a browser engine and Node.js and lets a web team reuse its skills; Tauri, which uses the system’s web view with a Rust back end for smaller installers; .NET MAUI, which targets Windows and macOS from C#; and Flutter, which has desktop support for Windows, macOS and Linux. Cross platform desktop app development saves time, but a native build can still be the better choice for heavy graphics, deep operating system integration or strict performance targets.

Custom desktop software development

When an off-the-shelf product cannot do what your workflow needs, custom desktop software development is the right fit: a tool that talks to specific hardware, replaces a spreadsheet nobody trusts or handles data that must stay on site. Desktop app developers on a custom project should be able to explain how the app will be installed, updated, signed and supported, since those decisions matter as much as the screens.

Key features and components

What separates a useful build from a costly one.

Common integrations

Where the value usually comes from.

Distribution and security

Desktop software has to be installed, trusted and updated; that is engineering work. Apps for the desktop need a plan for users who stay on an old version for years, so the update path and any server calls must keep working across several releases.

• Windows builds are code-signed and macOS builds are notarized per Apple’s notarization requirements.
• Auto-update channels keep every installed copy current and patched.
• Local data is encrypted and access is tied to your identity provider.
• Enterprise deployment through Intune, Jamf or MSI packages is planned with your IT team.

Our desktop application development process

We confirm the users, operating systems and hardware, choose native or cross-platform, design for desktop conventions, build in sprints with installers and auto-update from the first release, test across OS versions and devices, and support the application after launch. For a macOS app released directly to customers, the release steps include signing and notarization so the installer opens normally on a customer’s Mac.

How much does desktop application development cost?

At market rates, a focused internal desktop tool commonly costs $40,000-$90,000, a hardware-connected POS or kiosk application $80,000-$200,000, and a cross-platform product $100,000-$250,000.

Technology we typically use

Mainstream, maintainable choices.

Java desktop application development, usually with JavaFX or Swing, remains common in enterprises that already run Java services. Does Flutter support desktop application development? Yes, Flutter can build Windows, macOS and Linux apps, which makes it a reasonable choice when the same team is also building mobile apps.

Mistakes to avoid

Common causes of overruns and low adoption.

• Building a desktop app when a web app would do.
• Choosing Electron for a memory-constrained kiosk.
• No code signing or notarization.
• No update channel.
• Testing on one OS version.
• Ignoring IT deployment requirements.

Why choose Progression Agency for desktop application development?

Engineering, design and go-to-market in one team.

• Native and cross-platform desktop experience with honest advice on which to use.
• Hardware integration for POS, kiosk and industrial software.
• Signing, updates and IT deployment handled from the first release.
• You own the code, data and accounts.
• Headquartered in New York City, working with clients nationwide and worldwide.

Related services

See custom software development, .NET development, web app development and IoT app development.

Frequently asked questions