Desktop Application Development Services

Desktop application development - ScienceSoft

Desktop application development is aimed at building desktop software for Mac, Windows, and Linux or upgrading existing desktop apps with new functionality. A company with 34 years in IT, ScienceSoft offers professional desktop application development services using C++/Qt, .NET, and Python.

C++ department

  • Established in 1989.
  • 40+ C/C++ developers proficient in Qt.
  • 70% of developers have 10 years of experience.
  • 100+ successfully delivered projects.
Our C/C++ development services

.NET department

  • Established in 2004.
  • 50+ C#/C++ developers and 7 architects experienced in .NET.
  • 50% of developers have MCTS and MCPD certifications.
  • 190+ successfully delivered projects.
Our .NET development services

Python department

  • Established in 2013.
  • 25+ Python programmers.
  • Use of ScienceSoft’s 33 years of expertise in data science and analytics.
  • 50+ successfully delivered projects.
Our Python development services

We Know Your Industry


Banking and financial services



Education and training


Oil and gas

Transportation and logistics

Enterprise Resource/Process Management Software

Employee productivity software

  • Teleconferencing and VoIP software
  • Time-tracking apps
  • Virtual office software

Financial software

Industrial automation

Healthcare software

Emergency and security

  • Video surveillance software
  • VPN software
  • Backup software
  • Data loss prevention software
  • Antivirus software

Image/media software

  • 3D rendering software (CAD)
  • Image processing/editing software
  • Video/audio editing software
  • Video streaming apps
  • Media viewing apps

Utility software

  • File and content managers
  • Browsers
  • Downloading and torrenting software
  • Drivers, plugins, and add-ons

Highlights of ScienceSoft’s Desktop Projects

Cross-platform Desktop App for a Leader in Image Processing

Cross-platform Desktop App for a Leader in Image Processing

  • 40% development costs reduction due to Qt-powered cross-platform development.
  • 7 projects involving testing, modernization and desktop development from scratch.
Viber – VoIP Messenger with 1.17 Billion Users – for Desktop

Viber – VoIP Messenger with 1.17 Billion Users – for Desktop

  • Evolution of the Qt-based messenger app for Windows, Mac OS, and Linux.
  • Integration with the mobile app and an online billing portal.
Anti-Procrastination App Acknowledged by The Daily Telegraph and BBC

Anti-Procrastination App Acknowledged by The Daily Telegraph and BBC

  • Development of the Qt-based multiplatform app to block time-consuming websites.
  • Full-cycle app testing to ensure cross-browser compatibility.
Teleconferencing and Business Messaging App with Text-to-Speech

Teleconferencing and Business Messaging App with Text-to-Speech

  • App modernization to comply with accessibility policies using VoiceOver and Narrator engines.
  • Use of Qt to ensure compatibility with multiple OS versions and simplify future updates.
Offline Translation Tool with a Database of Over 700 Languages

Offline Translation Tool with a Database of Over 700 Languages

  • Modernization of the Visual Basic-based app using C# and .NET 4.0.
  • App testing and evolution – ScienceSoft’s team added predictive typing and support of Windows 8+ versions.
Desktop Graphic Suite for Designing Printed Content

Desktop Graphic Suite for Designing Printed Content

  • Modernization of the Delphi-based app using C++ and Qt; app integration with the back end.
  • Added features: product catalog viewing, image upload, image editing, order placement.
Web Browser with Over 10 Million Monthly Active Users

Web Browser with Over 10 Million Monthly Active Users

  • Cross-platform development, music services integration, and continuous evolution.
  • Added features include auto-updating, cryptographic tools, and in-app torrent downloading.
Desktop E-book Management Software for a Digital Marketplace

Desktop E-book Management Software for a Digital Marketplace

  • Development of the e-book library app with online and offline functionality.
  • Integration with .pdf and .doc reading software and the Customer’s website.
VPN Client for Desktop

VPN Client for Desktop

  • Modernization of the desktop VPN app to include OpenVPN services, upgrade tunneling protocols, and introduce the more secure authentication method.
  • Continuous maintenance and support.
iLivid Video Download Manager

iLivid Video Download Manager

  • 2.5+ year-long cooperation and iterative development.
  • Integration with YouTube and other video sites, 50 hosting services, and VLC player software.

Our Clients Say

Ready to Launch Your Desktop App Project?

Rely on ScienceSoft’s ample experience in delivering successful desktop software – and enjoy your modernized or brand-new desktop application.

Technologies We Employ in Desktop App Development

Programming languages



34 years



ScienceSoft's C++ developers created the desktop version of Viber and an award-winning imaging application for a global leader in image processing.

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10 years



We use Python for rapid development of cross-platform desktop apps.

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19 years





Our C# developers created the world’s largest PLM software. Their recent projects: development of SaaS for vCIO services management and underwriting software for a global aviation insurer.




4 years



We used Qt to deliver a cross-platform desktop app for a global leader in image processing, a desktop version of Viber, VoIP messenger with over 1 billion users, and an anti-procrastination app acknowledged by The Daily Telegraph and BBC.

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15 years



We have delivered WPF-based solutions for a leading market research company and a global leader in image processing.

Databases / data storages


Microsoft SQL Server

Our Microsoft SQL Server-based projects include a BI solution for 200 healthcare centers, the world’s largest PLM software, and an automated underwriting system for the global commercial insurance carrier.


We’ve implemented MySQL for Viber, an instant messenger with 1B+ users, and an award-winning remote patient monitoring software.

Azure SQL Database

Azure SQL Database is great for handling large volumes of data and varying database traffic: it easily scales up and down without any downtime or disruption to the applications. It also offers automatic backups and point-in-time recoveries to protect databases from accidental corruption or deletion.


ScienceSoft's team has implemented Oracle for software products used by GSK and AstraZeneca. We’ve also delivered Oracle-based SCM platform for Auchan, a retail chain with 1,700 stores.


ScienceSoft has used PostgreSQL in an IoT fleet management solution that supports 2,000+ customers with 26,500+ IoT devices. We’ve also helped a fintech startup promptly launch a top-flight BNPL product based on PostgreSQL.


Apache Cassandra

Our Apache Cassandra consultants helped a leading Internet of Vehicles company enhance their big data solution that analyzes IoT data from 600,000 vehicles.

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Apache Hive

ScienceSoft has helped one of the top market research companies migrate its big data solution for advertising channel analysis to Apache Hive. Together with other improvements, this led to 100x faster data processing.

Apache HBase

We use HBase if your database should scale to billions of rows and millions of columns while maintaining constant write and read performance.

Apache NiFi

With ScienceSoft’s managed IT support for Apache NiFi, an American biotechnology corporation got 10x faster big data processing, and its software stability increased from 50% to 99%.


ScienceSoft used MongoDB-based warehouse for an IoT solution that processed 30K+ events/per second from 1M devices. We’ve also delivered MongoDB-based operations management software for a pharma manufacturer.

The Financial Times Includes ScienceSoft USA Corporation in the List of the Americas’ Fastest-Growing Companies 2023

For the second year in a row, ScienceSoft USA Corporation ranks among 500 American companies with the highest revenue growth. This achievement is the result of our unfailing commitment to provide high-quality IT services and create best-value solutions that meet and even exceed our clients’ expectations.

Cross-platform development

Apart from targeting Windows, Mac OS, and Linux natively, ScienceSoft's desktop app developers help you reduce development time and costs up to 50% by delivering Qt-based app code that smoothly runs on all popular desktop operating systems.

Focus on delivering high-end results

  • High and stable app performance.
  • Multilayer application protection.
  • Ease of integration with required software and hardware.
  • Secure access to the required OS functions.

Smart installer

ScienceSoft complements desktop apps with the installer that reacts to the installation conditions, including the OS version, user language settings, third-party software/libraries, or previous app versions installed.

Fast, transparent, and effective processes

ScienceSoft adopts Agile principles, CI/CD, regular code reviews, and unit testing in all desktop projects. We also follow a set of KPIs (lead time, deployment frequency, customer satisfaction, etc.) that we share with our clients.

Our Desktop App Development Lifecycle

Desktop dpp development lifecycle - ScienceSoft

Consider ScienceSoft as Your Desktop Application Development Company

ScienceSoft is ready to carry out end-to-end development or join an ongoing project to handle a particular desktop app development stage. We also offer dedicated development teams or separate developer resources to augment your in-house team.

Desktop App Development

We plan, design, and develop a powerful desktop app from scratch. You can also add integration, support, and maintenance to the service package.

Project kickoff: In 1-2 weeks.

Pricing model: Fixed price or T&M.

Go for development

Desktop App Modernization

We refactor your app code using modern tools, bring the app to newer OS versions or other OSs, or introduce entirely new features.

Project kickoff: In 1-2 weeks.

Pricing model: Fixed price or T&M with a cap.

Go for modernization

All Application Services