# Desktop: Native and cross-platform apps for macOS, Windows, and Linux.

URL: https://extra.dev/services/desktop

**Desktop software built for demanding work**

Desktop applications for macOS, Windows and Linux, engineered to stay stable, responsive and precise.

## Engineered for the way work happens

Desktop applications are engineered around the operating systems, data and devices they need to work with. We bring together the interface, core functionality and platform integration so the software fits the workflows it needs to support.
Deployment, security, updates and ongoing support are planned alongside the application from the start. This gives organisations software they can rely on every day and a controlled path for future requirements and platform changes.

What this includes:
- **Native & cross-platform development**: Building desktop interfaces and application functionality for Windows, macOS and Linux using native or shared technologies.
- **System & hardware integration**: Integrating applications with operating-system capabilities, other software and services, instruments and peripheral devices.
- **Local data & processing**: Working with files, local databases, synchronisation and demanding processing, including software that must operate offline.
- **Security, performance & reliability**: Engineering secure, responsive and reliable applications, with accessibility and documentation for regulated environments where required.
- **Distribution & deployment**: Preparing signed applications for installation and distribution, including licensing, managed deployment and update delivery.
- **Maintenance & modernisation**: Maintaining compatibility, improving existing applications and moving established software to newer technologies or operating systems.

How we work:
- **Technical decisions based on operating needs**: Native and cross-platform options are assessed against the required workflows, target platforms and expected life of the software. The chosen approach balances access to platform features, consistency across systems and long-term maintenance.
- **Integrations developed with real systems**: Hardware, protocols and connected software are included early in development. Their behaviour and supported configurations are checked and documented as each integration is built.
- **Performance and reliability measured with realistic workloads**: Representative data, processing tasks and periods of operation are used to measure responsiveness, stability and resource use. Long-running work is assessed under the conditions in which the application will operate.
- **Security considered throughout development**: Authentication, local storage, network communication and operating-system permissions are handled according to the organisation’s security requirements. Those requirements guide architecture, implementation, testing and maintenance.
- **Reliable installation and updates**: Code signing, installation, configuration, updates and data migration are planned around the distribution method. Compatibility with supported operating-system versions and dependencies is reviewed as the application changes.

Stack: Native: Swift, C++, Qt, .NET, C#, WPF · Cross-platform: Electron, Flutter, Tauri, TypeScript, Rust · Data: SQLite, DuckDB, Parquet, Protocol Buffers · Delivery: Code signing, Notarization, MSIX, Squirrel, Sentry.

Questions we get about this discipline:
- **Can you develop for Windows, macOS and Linux?** Yes. We choose a native or cross-platform approach according to the operating systems, workflows and integrations the application needs. Support for each platform and version is defined in the scope.
- **Can you modernise software we already depend on?** Yes. We assess the application, its dependencies, data and deployment process to determine what can be improved in place. Modernisation can be staged so essential workflows remain available while changes are introduced.
- **Can the application work with our equipment or other software?** Yes. We work with operating-system services, peripherals, instruments, files and connected systems. Access to representative hardware and software helps us verify behaviour under the conditions in which the application will be used.
- **Can a desktop application work offline?** Yes, where the product requires it. We define what must remain available without a connection, where data is stored and how changes are synchronised when connectivity returns.
- **How will the application be installed and updated?** The distribution method is chosen for its users and operating environment. We plan installation, signing, configuration, updates and data migration together, including controlled deployment where an organisation manages its own devices.

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Published by Extra.dev (https://extra.dev), a software engineering team in Ljubljana, Slovenia.
Canonical page: https://extra.dev/services/desktop
Contact: hello@extra.dev · Replies within one working day
Site index for agents: https://extra.dev/llms.txt · Full text: https://extra.dev/llms-full.txt