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I need a cross-platform desktop application (Windows and macOS) that feels just like ChatGPT yet goes a step further: every conversation should be able to trigger one of my custom GPT models and immediately pipe the result into another application. An everyday flow would be: I open the chat, speak a request through the microphone, the “Marketing” GPT generates an email template, and—without leaving the chat—the template is pushed to our CRM via its API and sent. Key points you’ll be working on • Desktop first: native installers for Windows and macOS. • Dual interface: an intuitive GUI for general users and a CLI for scripted or headless use. • Server hand-off: the app must authenticate with my existing MV server, relay prompts to selected GPT endpoints, and return responses in real time. • Voice control: capture mic input and convert it to text before forwarding the prompt. • Modular integrations: today it’s a CRM; tomorrow it might be Slack, HubSpot, or a custom webhook, so a clean plug-in layer is essential. • Persistent history and usage logs stored locally with optional cloud sync. Deliverables 1. GUI application (Win/MSI, macOS DMG) and a standalone CLI binary. 2. Well-commented source in a private repo plus build scripts. 3. API & integration documentation with a sample module that sends data to a REST endpoint. 4. Short video walkthrough demonstrating the marketing-email workflow working end-to-end. I’m happy to discuss tech stacks—Electron, Tauri, .NET MAUI, or another solution—so long as performance is solid and future modules remain easy to add. Let’s make a desktop hub that turns conversational AI into immediate, actionable output.
Project ID: 40523945
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126 freelancers are bidding on average $489 USD for this job

Hi — Elias here from Miami. I understand you're looking to develop a cross-platform desktop application that mimics the ChatGPT experience. Your goal seems to be creating a user-friendly tool that integrates seamlessly into existing workflows. What usually matters most here is ensuring the application can handle various user roles while maintaining a smooth user experience across both Windows and macOS. A common issue in systems like this is managing API integrations effectively, particularly if you plan to expand functionalities later. The tricky part is usually balancing performance with reliability, especially during peak usage. My approach would involve architecting the application for scalability and maintainability from the start. I’d focus on a modular design, allowing for future enhancements without major overhauls. I've worked on similar desktop applications, ensuring they integrate well with backend services while keeping user experience at the forefront. A few questions to better understand the scope: Q1 – What types of user roles do you envision for this application? Q2 – Are there specific API integrations you’re considering? Q3 – How do you plan to handle user authentication and data security? Happy to go through the details and suggest the best technical approach. Looking forward to hearing from you.
$500 USD in 5 days
7.5
7.5

Hi I have strong experience building cross-platform desktop apps with Electron, Tauri, TypeScript, Node.js, REST APIs, CLI tooling, local storage, authentication, voice input, and modular integration layers. The main technical challenge is making a ChatGPT-style desktop hub that can stream conversations in real time while safely triggering external actions like sending CRM data. I would recommend Tauri or Electron depending on your UI and packaging needs, with a shared core service layer used by both the GUI and CLI. The app would authenticate with your MV server, route prompts to selected GPT endpoints, stream responses, and pass approved outputs into integration plugins. For voice control, I can add microphone capture, speech-to-text processing, prompt cleanup, and clear user confirmation before actions are sent. For integrations, I would design a plugin architecture where CRM, Slack, HubSpot, and webhook modules can be added without rewriting the chat engine. I can also implement persistent local history, usage logs, secure token storage, optional cloud sync hooks, native installers, build scripts, and documentation. The final workflow can demonstrate a spoken marketing request generating an email and pushing it through a REST-based CRM module. Thanks, Hercules
$500 USD in 7 days
6.4
6.4

Hello, I HAVE WORKED ON CROSS-PLATFORM DESKTOP APPLICATIONS, AI-POWERED SOFTWARE, LLM INTEGRATIONS, VOICE-ENABLED APPLICATIONS, AND API AUTOMATION SYSTEMS AND CAN SHARE RELEVANT EXAMPLES DURING OUR DISCUSSION. I have carefully reviewed your requirements and understand that you need a ChatGPT-style desktop application that connects custom GPT models with external applications through automated workflows. I have 11+ years of experience in full-stack development, desktop app development, AI integrations, API architecture, and automation solutions. I can build a Windows and macOS application with an intuitive GUI, CLI support, real-time GPT communication, voice-to-text capability, local conversation history, usage logging, and a scalable plugin-based integration system. I can implement secure authentication with your existing MV server, create modular connectors for CRM, Slack, HubSpot, and custom REST APIs, and ensure the architecture remains flexible for future integrations. I will provide clean source code, build scripts, documentation, and a complete workflow demonstration from voice input to AI response and external application execution. I WILL PROVIDE 2 YEARS OF FREE ONGOING SUPPORT AND COMPLETE SOURCE CODE. WE WILL WORK WITH AGILE METHODOLOGY AND PROVIDE ASSISTANCE FROM INITIAL PLANNING TO FINAL DEPLOYMENT. I am available as per your preferred time zone and look forward to discussing the technical roadmap. Thanks, Christina
$500 USD in 7 days
6.2
6.2

Good to see this project, I will build your desktop GPT hub — cross-platform GUI with native installers, CLI binary, voice-to-text input, and a modular plugin layer for routing GPT responses to external services. I recommend Tauri over Electron here — it produces significantly smaller binaries, uses native webview instead of bundling Chromium, and its Rust backend handles real-time streaming from your MV server with minimal memory overhead. The plugin architecture will use a trait-based system so adding Slack, HubSpot, or webhook connectors requires only a single module file. Questions: 1) Which speech-to-text engine do you prefer — OpenAI Whisper, system-native, or another? 2) Does your MV server use standard OAuth or a custom auth flow? Ready to start whenever you are. Kamran
$286 USD in 10 days
5.6
5.6

⭐⭐⭐⭐⭐ Build a Cross-Platform Desktop App for Custom GPT Integration ❇️ Hi My Friend, I hope you are doing well. I reviewed your project needs and see you are looking for a cross-platform desktop application. You don't need to look any further; Zohaib is here to help you! My team has completed 50+ similar projects for desktop applications. I will create an intuitive app that connects your custom GPT models and integrates seamlessly with your CRM and other tools. ➡️ Why Me? I can easily build your desktop application for both Windows and macOS as I have 5 years of experience in application development, specializing in GUI design, API integration, and voice control features. I have a strong grip on technologies like Electron, Tauri, and .NET MAUI, ensuring a robust and efficient solution. ➡️ Let's have a quick chat to discuss your project in detail and let me show you samples of my previous work. I look forward to discussing this with you in our chat. ➡️ Skills & Experience: ✅ Application Development ✅ GUI Design ✅ API Integration ✅ Voice Control ✅ Modular Architecture ✅ Cross-Platform Support ✅ Real-Time Data Handling ✅ Cloud Sync Implementation ✅ CLI Development ✅ User Authentication ✅ Documentation Writing ✅ Video Walkthrough Creation Waiting for your response! Best Regards, Zohaib
$350 USD in 2 days
5.3
5.3

Leveraging Electron or Tauri could streamline the development of your cross-platform application while efficiently handling voice input for real-time responses. Could you share more about your existing MV server and preferred authentication methods? With 5 years of experience in developing desktop apps, I specialize in building intuitive user interfaces and modular integrations, ensuring easy expansion for future features. I can create a seamless connection between your custom GPT models and CRMs, complete with local data storage and optional cloud sync. I will deliver native installers for both Windows and macOS, along with comprehensive documentation and a demo video showcasing the workflow. I’m eager to discuss tech stacks further and design a solution tailored to your needs. Best Regards, Mahad Sheikh
$250 USD in 3 days
4.9
4.9

Hi, I’m interested in building this AI-powered desktop hub application. I have experience developing full-stack and AI-enabled applications using C#/.NET, React, TypeScript, Python, API integrations, and cloud-based architectures. I can design a cross-platform solution with a strong modular foundation so new GPT workflows and external integrations can be added easily. For the implementation, I would recommend a stack such as: * Electron + React/TypeScript for a ChatGPT-style desktop UI and Windows/macOS support * Node.js/.NET backend services for API communication and authentication * Secure integration layer for GPT endpoints and external applications * Local storage (SQLite) for conversation history, logs, and offline support * Plugin-based architecture for CRM, Slack, HubSpot, and future connectors * Voice input using speech-to-text services with real-time processing The application will include: * Windows installer and macOS DMG builds * Desktop GUI plus CLI for automation workflows * Real-time prompt/response handling * Custom GPT selection per conversation * REST integration module example * Documentation and end-to-end workflow demo I can help architect this as a scalable desktop AI platform rather than a single-purpose tool. Best regards, Brayan Stiven Arias Henao
$500 USD in 7 days
4.6
4.6

✋ Hi There!!! ✋ The Goal of the project:- BUILD A HIGH-PERFORMANCE CROSS-PLATFORM DESKTOP AI HUB WITH VOICE INPUT, GPT AUTOMATION, MODULAR INTEGRATIONS, AND REAL-TIME API CONNECTIVITY. I carefully read the complete project description and understand the desktop-first approach, GUI and CLI requirements, server authentication, voice-to-text workflow, modular integrations, local history, and milestone deliverables. With 9+ years experience as a full stack developer, I can deliver a scalable and maintainable solution tailored for future expansion. I have completed similar AI automation, desktop application, REST API, and workflow integration projects. • Develop Windows and macOS GUI with CLI support and real-time GPT endpoint integration. • Implement voice input, modular CRM/webhook plugins, and persistent local history with optional cloud sync. • Provide UI design, database management, testing, full source code delivery, build scripts, API documentation, and deployment support. Looking forward to chat with you for make a deal Best Regards Elisha Mariam!
$300 USD in 11 days
4.6
4.6

With my rich experience in both designing and developing cutting-edge applications, I am confident that I can skillfully bring your vision of a cross-platform desktop application to reality. My mastery of a range of tech stacks including Electron, Tauri, and .NET MAUI ensures we can build the best-performing solution tailored to your needs. Having worked extensively on APIs, microservices, and SaaS, I understand how important the server hand-off and seamless integration with different systems is for a project like this. Voice control is a fantastic feature you're looking for in the application and my expertise with speech-to-text technology aligns perfectly with that requirement. In line with your preference for future-proof solutions, I employ clean plug-in architecture in all my projects. This would enable easy integration with other platforms like Slack, HubSpot, or any custom webhook you may require in the future. Additionally, my experience in ensuring robust security protocols like SOC2 will guarantee data safety for any complex workflows involving third-party systems.
$500 USD in 3 days
4.3
4.3

As a seasoned and versatile developer with over 12 years of experience, I have a formidable array of technical skills that make me an ideal candidate for your Desktop GPT Automation Connector project. My team's expertise stretches from Full-Stack Development to AI, Cloud, and Database Management - all the areas critical to this undertaking. We are well-versed in PHP, Laravel, JavaScript, TypeScript, Node.js, among other languages, as well as MongoDB, PostgreSQL, MySQL i.e., databases relevant to storing locally-based information. Our history with Automation systems can be of immense value to your project; we have created intelligent workflows with OCR and NLP capabilities incorporating prompts. Additionally, our firm grasp of API development engenders seamless integration with third-party platforms like your suggested CRM system or any other on the horizon. The cross-platform nature of your desired application
$250 USD in 7 days
4.4
4.4

I can build this desktop “GPT hub” so your team can talk to specialized GPTs and instantly push results into other tools without ever leaving the app. My focus will be a solid cross‑platform foundation (Windows MSI + macOS DMG) with both a friendly GUI and a CLI that share the same core engine, making it easy to script or run headless automations. For the stack, I’d lean toward Tauri or Electron with a typed backend (Node/TypeScript or .NET) to keep integrations modular: the app will authenticate against your existing MV server, route prompts to the right GPT endpoint, and stream responses back in real time. I’ll add voice capture (mic → speech‑to‑text) so flows like “Marketing GPT → CRM email send” feel natural: speak, review, and auto‑push via the CRM’s REST API. The integration layer will be plugin‑style, so adding Slack, HubSpot or custom webhooks later is just a matter of dropping in new modules. You’ll get: native installers for Win/macOS, a standalone CLI binary, well‑commented source in a private repo with build scripts, an API/integration doc plus a sample module that posts to a REST endpoint, and a short video showing the full marketing email workflow from voice prompt to CRM send. Once we align on preferred stack and MV/GPT endpoint details, I can propose milestones and start turning this into a fast, extensible desktop automation connector.
$500 USD in 5 days
4.0
4.0

Hi! This is Jorge from IT GLOBAL SOLUTION LLC (FL, US). I’ve built desktop AI connector apps like what you’re describing: streaming model responses in real time, capturing voice input, and sending structured outputs to external CRMs via REST APIs. Your modular integration layer is the right foundation. I’d build the desktop hub with Tauri (Rust core + lightweight web UI) to deliver native-feeling Windows/macOS installers, plus a separate CLI that shares the same prompt/orchestration logic. The app would authenticate to your MV server using your chosen method (token/OAuth/session), then relay each conversation turn through a unified “Model Gateway” to selectable GPT endpoints. For real-time UX, I’d stream responses back to the UI via WebSocket/SSE (or chunked HTTP if that’s what MV supports). Voice would be a dedicated pipeline: microphone capture → transcription (configurable local STT engine or your STT API) → forward the text prompt to the selected GPT model. To support “today CRM, tomorrow Slack/HubSpot/webhooks,” I’d implement a plug-in interface that maps a GPT output schema to action calls. A sample CRM connector would POST a generated email template to the CRM API and return status, keeping formatting deterministic via a small JSON schema enforced on the model. Conversation history and usage logs would live in SQLite with an optional cloud sync toggle, using clean data models for users, chats, runs, and integration outcomes.
$500 USD in 7 days
4.0
4.0

As a seasoned Senior Web Engineer with significant experience in complex web systems and high-performance applications, I believe I'm the perfect fit for your cross-platform desktop project. My expertise ranges from frontend development to backend proficiency, including APIs & integrations which aligns perfectly with your job requirements. I've built scalable and maintainable architectures for SaaS platforms, admin dashboards and workflow automation tools like the one you're envisioning. Speaking of the tech stack, I am familiar with Electron, Tauri and .NET MAUI among others. I prioritize performance and future module integration to ensure the long-term sustainability of our build. Your project's dual interface requirement is something I have previously worked on, designing intuitive GUIs for mainstream users backed by powerful CLIs for professionals. Finally, my knack for API development combined with my aptitude for software documentation makes me the right choice to deliver your much-needed API & integration documentation. Excelling in two things that are often considered as separate worlds—the creative frontend development and more systematic backend work—I can assure you that not only will your desktop application be efficient but it'll also have an arresting UI. Let's connect and turn your desire for immediate actionable output into reality!
$500 USD in 7 days
4.1
4.1

Hello, I can build the cross-platform desktop AI hub you described, with a ChatGPT-like interface, voice input, GPT endpoint routing, and modular integrations that can push generated outputs directly into external apps such as your CRM. For the stack, I would recommend Tauri or Electron depending on your preferred balance between lightweight performance and development speed. The app can include a desktop GUI for general users and a CLI for scripted/headless workflows. I will structure the system with a clean plug-in layer so future integrations like Slack, HubSpot, REST webhooks, or custom internal tools can be added without changing the core chat engine. Core architecture: Windows/macOS desktop app with native installers Chat-style UI with conversation history Microphone input with speech-to-text Authentication with your existing MV server Prompt routing to selected GPT/custom model endpoints Streaming or near real-time response handling Integration plug-in system for CRM/API actions Local history and usage logs, with optional cloud sync hooks CLI binary for automation and scripted usage I will focus on a clean user experience, secure authentication, reliable API hand-off, maintainable architecture, and easy future expansion for additional GPT models and business integrations.
$500 USD in 7 days
4.1
4.1

With so much at stake, your desktop GPT automation connector project needs an expert like me from Web Crest. Our team wields a comprehensive set of skills, ranging from API development to SaaS platform construction. We understand the complexities of blending conversational AI with business tasks and the need for seamless integration with various platforms; this makes us the perfect partner for the job. Having worked on intricate projects that involved authentication, modular integrations, usage logs, etc., we're aware of the challenges at hand. Our experience in building AI agents and automation systems would go a long way in ensuring smooth server hand-off and prompt relaying. Additionally, our proficiency in using technologies such as Electron, .NET MAUI and more showcases our ability to adapt to different stacks and design a highly optimized system for you. Moreover, our past projects have demanded scalability without compromising security or performance—pertinent to your project's near-real-time transfers and data handling. We also possess an innate ability to think ahead and develop systems with easy-to-create modules keeping future integration demands in mind. Engaging with Web Crest means not only getting a technologically adept team but a collaborator who communicates transparently and provides prompt technical support in this ever-evolving digital landscape. Embrace exceptional with us!
$300 USD in 5 days
3.8
3.8

Good to see this project, We will build your cross-platform desktop hub (Windows, macOS) with both GUI and CLI, connecting your custom GPT models to external services through a modular plugin layer. For the plugin architecture, we will define a simple interface where each integration (CRM, Slack, HubSpot) registers its trigger and output method. Adding a new connector becomes a single file drop. For voice input, we will use Whisper locally so mic capture stays fast and private. A couple of quick things to confirm: 1) Which speech-to-text latency is acceptable, and should voice work offline or is cloud fine? 2) What authentication method does your MV server use (OAuth, API key, JWT)? The number quoted here is a starting estimate. The exact cost and timeline will be confirmed after we go through the full scope together. Looking forward to your response. Best regards, Faizan
$281 USD in 10 days
3.8
3.8

Hello There!!! ★★★★ ( Cross-platform desktop GPT automation app with voice, API & plugin workflow system ) ★★★★ Project understanding: I understand you need a desktop app for Windows and macOS that works like ChatGPT but can trigger custom GPT models and send outputs directly to external apps like CRM via API. It should support voice input, CLI + GUI, modular integrations, logs, and real-time response handling with a scalable plugin system. Services: ⚜ Cross-platform desktop app using Electron/Tauri/.NET MAUI ⚜ Chat-style UI with GPT model routing system ⚜ Voice-to-text microphone input integration ⚜ API middleware for CRM & external system automation ⚜ Plugin architecture for future integrations (Slack, HubSpot etc.) ⚜ CLI tool for automation & headless execution ⚜ Local + cloud sync logging & history system I have experience in desktop automation tools and API-driven systems. I will design a modular architecture so each GPT workflow can plug into external services easily, with clean performance and scalability. Let’s connect and discuss tech stack, I can start immediatly. Warm Regards, Farhin B.
$559 USD in 6 days
3.9
3.9

Hello After careful review of your requirements, I am confident that I can successfully complete this project, and I hereby submit this proposal. I understand that your objective is to develop a Desktop GPT Automation Connector that integrates AI capabilities with desktop workflows, enabling seamless automation, data exchange, and interaction between GPT-powered services and existing applications. I have strong experience in AI integrations, API development, desktop applications, workflow automation, Python development, and building scalable software solutions. This demonstrates that my skills are a good fit for your project. To realize this project, I would begin by analyzing the required workflows, desktop environment, and integration points to design a secure and efficient architecture. I would develop the connector to facilitate communication between desktop applications and GPT-powered services, implement robust API integrations, automate repetitive tasks, and ensure reliable data processing. Additionally, I would focus on security, performance optimization, error handling, and maintainable code architecture so the solution remains scalable and adaptable as automation requirements evolve. I can provide solution and my experience for this project via a private chat. I have got ideas brewing for your project, but I’d like to make sure they are aligned with what you want. Warm regards Ruslan
$300 USD in 7 days
3.6
3.6

This project aligns very well with my background in AI systems, NLP, and full-stack application development. I have 9+ years of experience building AI-powered applications, including custom LLM workflows, chatbot systems, voice-enabled interfaces, and API-driven automation platforms. I’ve built over 20 advanced chatbot and GPT-based solutions, and this desktop hub concept—turning conversation into direct action—is exactly the kind of workflow automation I specialize in. For your application, I can build a high-performance cross-platform desktop solution using Electron or Tauri (based on your performance preference), with: • ChatGPT-style GUI for natural conversation • CLI mode for scripting and automation • Secure authentication with your existing server • Real-time GPT endpoint switching (Marketing, Sales, Support, etc.) • Voice-to-text integration for microphone input • Modular plugin architecture for CRM, Slack, HubSpot, webhooks • Local conversation history, logs, and optional cloud sync • REST API integrations for immediate action execution My strength is not just building the interface, but designing scalable AI pipelines where GPT outputs trigger real business workflows automatically. I can deliver the full app, source code, build scripts, integration docs, and walkthrough video as requested. Would love to discuss your existing server structure and integration flow. Best regards.
$500 USD in 7 days
3.5
3.5

I can develop a cross-platform desktop application for Windows and macOS that replicates a ChatGPT-like experience with advanced workflow automation. The app will support chat and voice input, route prompts to your custom GPT models via your server, and automatically pass outputs to external systems like your CRM through a modular plugin-based integration layer. It will include both a GUI and CLI version, local history storage, optional cloud sync, and secure API-based communication with your backend. The solution will be built with a scalable architecture (Electron/Tauri or similar), ensuring high performance and easy future expansion for additional integrations such as Slack, HubSpot, or custom APIs. Deliverables will include installers (MSI & DMG), full source code, documentation, and a working demo of the end-to-end workflow. If you're looking for someone who treats your project like their own business, you're in the right place. Just give me one opportunity to prove my expertise, and I’m confident you’ll want to work with me again. Best regards, Ammar Ahmed Malik
$250 USD in 3 days
3.2
3.2

Unterhaching, Germany
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