Desktop application development services
Desktop application development services for Windows, macOS and Linux: C++ and Qt, WPF, WinForms and WinUI, Avalonia and .NET MAUI, Electron, Tauri and Rust, native macOS apps in Swift, plug-ins for Office, CAD and audio software, and the move of older .NET Framework software to current .NET, with dedicated desktop developers for your team or a project delivered end to end.
Desktop software we build
C++ and Qt desktop products
Instrument control software, medical imaging viewers, CAD and media tools in C++ on Qt 6, with the choice between the LGPL and a commercial Qt licence settled before the first release and Qt Test suites run on every target system.
Windows line-of-business applications
WPF, WinForms and WinUI 3 applications on .NET 10 with MVVM, dependency injection and unit tests on the view models, instead of business logic buried in code-behind.
From .NET Framework to current .NET
Older WinForms and WPF software moved off .NET Framework 4.x project by project, with tests added around each part before it moves and every step released on its own.
Cross-platform .NET desktop
Avalonia UI or Uno Platform when one C# codebase must run on Windows, macOS and Linux, and .NET MAUI for Windows and macOS when the same app also belongs on iOS and Android.
Electron applications
Desktop apps with a React, Angular or Vue interface in TypeScript, with context isolation and sandboxed renderers, every IPC message validated in the main process, and builds and auto-updates from Electron Forge or electron-builder.
Native macOS apps in Swift
SwiftUI and AppKit applications, menu bar utilities and system extensions for Apple silicon, sandboxed for the Mac App Store or signed with Developer ID and notarised for direct download.
Tauri applications
Tauri 2 apps with a React, Vue or Svelte interface over a Rust core, installers a fraction of the size of an Electron build, and system access limited to what the app’s capability files grant.
Plug-ins and add-ins
Office add-ins on Office.js, Revit, AutoCAD and SolidWorks plug-ins through their .NET APIs, Adobe plug-ins on UXP, and VST3 and Audio Unit plug-ins in C++ with JUCE.
Installers, signing and updates
MSIX and WiX installers for Windows, notarised builds with Sparkle updates for macOS, and Flatpak, Snap and AppImage packages for Linux, all produced by a pipeline from main rather than on a developer’s laptop.
Hire desktop developers
Dedicated desktop developers
Desktop developers who join your team full time, work in your tools and process, and report to your lead. You interview them; we carry the Ukrainian contract, payroll, invoicing and leave.
Desktop development projects
A defined piece of desktop development with a scope, a fixed plan and a named lead on our side who owns the result and reports progress in your channels.
Ongoing desktop development
Desktop development as a continuing service: the same people every month, a backlog you prioritise, and hours you can see in our portal and on the invoice.
The dedicated team page explains how specialists join your team, and the outsourcing page covers project delivery, take-overs and how we charge.
Who works on your desktop development
C++ and Qt developers
Qt 6 Widgets and QML, CMake and JUCE
.NET desktop engineers
WPF, WinForms, WinUI, Avalonia and .NET MAUI
Electron and Tauri developers
TypeScript interfaces with Node.js or Rust behind them
macOS developers
Swift, SwiftUI and AppKit
QA engineers
Test passes on every target operating system
Choosing the desktop framework
C++ and Qt when the product already lives in C++, needs its libraries or must also run on embedded Linux. WPF, WinForms or WinUI when the software runs on Windows and the team writes C#, and Avalonia or .NET MAUI when the same C# has to reach macOS, Linux or phones. Electron when the interface is a web application your team already builds, Tauri when the installer must stay small, and Swift when the app belongs on the Mac.
Whichever framework, builds, signing and installers come from a pipeline, every target operating system gets a test pass before release, and crash reporting and update channels are in place before the first user installs it.
Other specialised development we provide
Full-stack development
Full-stack development services: web apps, SaaS products, marketplaces and portals on MERN, MEAN, Next.js, .NET, Laravel, Django, Spring Boot and Rails stacks, with dedicated full-stack developers or project delivery.
Blockchain development
Blockchain development services: Solidity and Solana smart contracts, DeFi, wallets, exchanges, NFTs and tokenisation, zero-knowledge proofs and indexers, with dedicated blockchain developers or project delivery.
Salesforce development
Salesforce development services: Sales, Service, Marketing, Commerce and Experience Cloud, Apex, LWC, CPQ, Data 360, Agentforce, MuleSoft and AppExchange apps, with dedicated Salesforce developers or project delivery.
Software architecture and fractional CTO
Software architecture and fractional CTO services: solution, cloud, data and security architecture for fintech, SaaS and e-commerce, reviews and due diligence, with dedicated software architects or project delivery.
Questions about desktop development
Can you move our WinForms or WPF application to current .NET?
Yes. Dependencies are brought to current versions first, tests are added around the code about to move, and the projects move one at a time, each released on its own, so the application keeps working throughout. The interface does not have to be rewritten to get there.
Do you build for macOS and Linux as well as Windows?
Yes. Qt, Avalonia, Electron and Tauri cover Windows, macOS and Linux from one codebase, .NET MAUI covers Windows and macOS, and Swift builds native Mac apps. Our own compliance agent runs on Windows, macOS and Ubuntu from one Rust codebase.
Which industries do your desktop developers work in?
Most often industrial automation, manufacturing and energy (operator screens, machine configuration and test benches), healthcare and medical devices (imaging viewers and laboratory software), enterprise software (line-of-business clients and point-of-sale systems), cybersecurity (endpoint agents and analysis tools) and fintech (trading terminals and branch software). They also build engineering and CAD tools, media and audio software, and automotive diagnostics.
How quickly can desktop developers start?
When the right desktop developer is available, the start is gated only by your interview and the NDA and IP assignment. Otherwise we run a search, which typically produces candidate profiles within two to three weeks, and nobody starts until you have said yes.
How do we hire desktop developers through BigTree108?
Tell us the work, the seniority and the hours you need. We propose one or two people with their profiles, you interview them the way you would interview your own hire, and you sign one agreement with BIG TREE 108 LLC and receive one invoice a month.
Who owns the work they produce?
You do. Every specialist has a signed contract with BigTree108 that assigns all work product to the company, and our agreement with you assigns it onward. Code, designs and documents are delivered into your own repositories and tools, not kept where only we can change them.
Building or maintaining desktop software?
Tell us the platforms, the framework it is written in and what needs to change. You get an answer within one business day: a plan, candidate profiles, or a recommendation on the framework.