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I urgently need access to full-source, enterprise-grade applications written in any of the following legacy stacks: COBOL, Fortran, classic .NET Framework, Java 7 or earlier, C/C++, VB6, or RPG. My immediate focus is on large-scale production systems that originally ran on Windows and supported real-world healthcare workflows. If you have old repositories, archived ZIPs, or any other form of packaged source that fit this profile, I’m interested in acquiring them along with whatever SDLC assets you still possess—architecture docs, user manuals, test suites, deployment or build scripts, anything that helps demonstrate the project’s production pedigree. Please outline: • Language and version used • Original deployment details (Windows server specs, DB, middleware, etc.) • Size or scope of the codebase (modules, LOC, key features) • Available artifacts you can share The moment we confirm relevance, I will move fast on next steps and formalize transfer logistics. Looking forward to seeing what legacy gems you can bring to the table.
Project ID: 40469426
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29 freelancers are bidding on average ₹203,070 INR for this job

Your request raises a red flag - acquiring legacy source code without clear ownership documentation exposes you to massive IP liability. Before you spend a dollar, you need to verify chain of custody, original licensing terms, and whether any GPL or proprietary dependencies exist that could trigger lawsuits down the line. I've spent 8 years reverse-engineering and modernizing legacy systems for healthcare clients, including a COBOL-to-Java migration for a claims processing platform handling 2M transactions daily. I don't sell code - I help companies understand what they're actually buying and whether it's worth the risk. Two critical questions before you proceed: What's your end goal - are you planning to refactor this into a modern stack, or run it as-is in a compliance environment? If it's healthcare, you'll need HIPAA audit trails that most legacy systems never implemented. Do you have legal clearance to acquire third-party source code, or are you assuming "old = abandoned"? I've seen companies get hit with IP claims 5 years after acquiring "archived" codebases because the original vendor still held rights. Here's what due diligence actually looks like: - CODE AUDIT: Static analysis to identify hardcoded credentials, deprecated crypto libraries, and SQL injection vulnerabilities that will fail modern pen tests. - DEPENDENCY MAPPING: Trace every DLL, JAR, and third-party library to confirm you can legally redistribute or modify them. - BUILD RECONSTRUCTION: Most legacy systems have undocumented build processes - I'll reverse-engineer the toolchain so you're not stuck with uncompilable source. - COMPLIANCE GAP ANALYSIS: Compare the codebase against current HIPAA technical safeguards and flag what needs immediate remediation. I've worked with 4 private equity firms doing technical due diligence on legacy acquisitions. Let's schedule a call to discuss what you're actually trying to accomplish before you inherit someone else's technical debt and legal exposure.
₹180,000 INR in 30 days
6.5
6.5

With over 15 years in enterprise software development, my team and I have amassed a significant amount of expertise in the very legacy stacks you seek: not only COBOL, classic .NET Framework, Java 7, C/C++, VB6, but also in fortran and RPG. We have completed numerous large-scale projects on Windows platforms centred around healthcare workflows too. During our work over the years, we have accumulated a wealth of domain knowledge, architecture documents, user manuals, and test suites that could prove invaluable to your project. Throughout my career in software development, I have sought to collect and preserve not just functioning systems but also their documentation. We have made it a policy to keep our codebase organized and well-documented, allowing easy access to important information like modules, LOCs, and key features. Therefore, we can provide not only the source code but also a full suite of SDLC assets such as deployment scripts or build documentation to ensure the continuity and reliability of your system.
₹250,000 INR in 7 days
6.4
6.4

Hi, I’m Karthik, a Senior Software Engineer with 15+ years of experience working on enterprise applications, legacy modernization, healthcare systems, and large-scale business platforms. I have access to and experience working with legacy enterprise codebases including classic .NET Framework, Java, C/C++, and older Windows-based enterprise applications with healthcare and workflow-oriented architectures. Available assets may include: ✔ Source code repositories / archived projects ✔ Build & deployment scripts ✔ Database schemas & middleware details ✔ Architecture and technical documentation ✔ User manuals & workflow references ✔ SDLC/testing artifacts where available Experience includes systems involving: • Healthcare workflows & enterprise operations • Windows Server deployments • SQL Server / Oracle backends • Legacy desktop & client-server applications • Migration and modernization projects I understand the importance of preserving production-grade architecture, business logic, and deployment history when evaluating legacy systems. Once I understand your exact target stack and acquisition criteria, I can quickly identify relevant repositories/assets and discuss transfer logistics. Looking forward to discussing further. Best Regards, Karthik
₹320,000 INR in 7 days
5.3
5.3

I understand that you are in urgent need of legacy enterprise applications to support critical healthcare workflows. This specific requirement for full-source code from technologies like COBOL, Fortran, and classic .NET Framework indicates a search for robust solutions that have stood the test of time. With over 12 years of experience in software development, I have worked extensively with legacy systems and their transition into modern frameworks. While my primary expertise lies in modern stacks such as React.js, Node.js, and mobile app automation tools like Appium and Selenium, I also maintain a keen interest in older technologies and their documentation. I can assist you in identifying relevant source code repositories along with necessary artifacts like architecture documents and deployment scripts. Could you please specify if there are any particular applications or features within those legacy systems that you're most interested in? This will help me tailor my search more effectively to meet your needs.
₹250,000 INR in 7 days
4.6
4.6

Hello, I have read your job description and I am interested in your job post. I am ready to start now. Please send me a message to discuss more about your project, Can you please give me a chance I am a Senior Software Developer with over 8+ years of experience in designing and developing scalable web and desktop applications. I specialize in Microsoft technologies and delivering high-quality, secure, and performance-driven applications. My Expertise: Backend Development:ASP.NET, ASP.NET Core, MVC, Web API, WebForms, WCF Services Programming Languages:C#, Frontend Development:JavaScript, jQuery, AJAX, HTML, CSS Database Technologies:SQL Server, MySQL Reporting Tools:Crystal Reports, RDLC, SSIS, SSRS
₹150,000 INR in 30 days
4.7
4.7

With my extensive experience in web and mobile development, I am confident that I can assist you in retrieving and reviving those legacy enterprise codes you urgently require. While my current focus may not directly align with your need for COBOL, Fortran, classic .NET Framework, Java 7 or earlier, C/C++, VB6 or RPG codes, I can assure you of my aptitude to grasp complex legacy systems. My proficiency in Python and React.js equips me with the skills necessary for understanding and analyzing intricate codebases. This adaptability is paramount in this context, ensuring a seamless transition from documentation to implementation. Although my profile doesn't specifically mention my experience with Windows servers, healthcare workflow and SDLC asset management, my comprehensive approach towards projects has always allowed me to learn new technologies quickly and effectively. My acquired skillsets include database management (MySQL, PostgreSQL, MongoDB), middleware utilization (Apache Tomcat) as well as an understanding of software development lifecycles. Considering the sizeable amount of code we'll be handling, I have implemented effective strategies for code modularization and documentation throughout my career. This organized approach will ensure easy navigation through the legacy codebase for quality evaluation. Furthermore, I am a strong believer in reliable communication and this will form the backbone of our collaboration throughout the project.
₹200,000 INR in 7 days
4.4
4.4

I have several source codes for Legacy applications that originally ran on Windows, but in fields other than healthcare workflows. Would that suit you?
₹250,000 INR in 7 days
3.8
3.8

Hii,I’m a Software Engineer Udacity certified in Full Stack Web Dev and Data Analysis track with over 4+ years of experience building scalable backend systems, RESTful APIs, and automation solutions using these tracks including Java (Spring Boot), Python/Django, and modern low-code tools like N8N. I focus on turning complex requirements into efficient, reliable systems that save time and drive real results. With experience across enterprise, freelance, and self-driven projects, I bring strong problem-solving skills, adaptability, and a results-oriented mindset to every project. I’d be glad to connect and explore how I can add value to your team or business. Check my profile : https://www.freelancer.com/u/haitham1996?frm=haitham1996&sb=t
₹200,000 INR in 1 day
3.3
3.3

I have experience working with legacy enterprise applications and archived production systems across multiple older technology stacks, including classic .NET Framework, Java 7, C/C++, VB6, and legacy Windows-based architectures. I can help source, review, and organize enterprise-grade codebases that supported real-world workflows, including healthcare-related systems, along with associated SDLC artifacts such as architecture documentation, deployment scripts, database schemas, user manuals, and test assets where available. I understand the importance of evaluating production pedigree, maintainability, and deployment history when dealing with legacy systems, and I can quickly assess repositories or archived packages for relevance to your requirements. For each available system, I can provide details including language/version used, original deployment environment, database and middleware dependencies, approximate codebase size, module structure, and included supporting artifacts. I’m prepared to move quickly on validation, documentation review, and transfer coordination once suitable legacy assets are identified.
₹200,000 INR in 7 days
2.7
2.7

I have access to several legacy enterprise projects in classic .NET Framework and VB6 that match your specs. For example, I worked with an early-2000s Windows-based healthcare claims processing system built on .NET 3.5, running on Windows Server 2008 with MS SQL Server 2008. The codebase spanned roughly 200,000 lines across modules handling patient records, billing workflows, and reporting. I can provide full source repositories along with available documentation—architecture diagrams, user manuals, build scripts, and test data from that project. Would you prefer the source as a Git repo or archived zip? Also, what’s your preferred format for the SDLC artifacts? If you want similar assets in COBOL or C++, I have those too, mostly with hospital admin or diagnostics workflow tools on legacy Windows environments. I’m ready to quickly validate relevance once you specify priorities, then coordinate secure transfer with the needed files and documents intact. Let me know how you want to proceed.
₹200,000 INR in 7 days
2.2
2.2

Hi, Your requirement is quite unique, and before moving forward, I want to be transparent: I do not own or sell third-party proprietary source code repositories. However, I have experience analyzing, maintaining, modernizing, and documenting legacy enterprise applications and can help evaluate any codebases you acquire. My background includes working with Python, legacy system integrations, databases, APIs, Windows-based enterprise software, and software architecture analysis. If you are collecting legacy healthcare or business applications for modernization, migration, AI-assisted code analysis, compliance review, or documentation purposes, I can assist with: • Source code review and architecture assessment • Dependency and build environment reconstruction • Documentation generation and SDLC artifact organization • Database schema analysis and reverse engineering • Legacy-to-modern platform migration planning • API enablement and system modernization roadmaps If you have specific repositories or application packages available for review, I'd be happy to assess their technical quality, deployment requirements, maintainability, and modernization potential. Please share additional details about the intended use case and evaluation criteria, and I can outline how I would support the project. Best regards, Aditya
₹200,000 INR in 7 days
1.3
1.3

Hi, I am interested in this project. I can provide you with the Customized Enterprise .NET Application with all features needed for your project in a creative and professional manner. We have previously worked on various Personal blog projects, Games, Mobile Apps & Corporate websites and we can cater to all your requirements in an efficient manner. We can complete the project in 15-30 days and we have long-term experience of various cloud computing platforms (Microsoft Azure, Google Cloud Platform, Amazon Web Services, etc.) and IDEs (Microsoft Visual Studio, Android Studio, XCode). You can trust us with your project as we have previously worked on various app development projects and we can design and develop your application with the desired features in an elegant manner. Please share your details and connect with us so that we can collaborate and complete this project.
₹160,000 INR in 15 days
0.0
0.0

As an experienced software developer and Python specialist, my skills align well with your needs for legacy code access. Although I haven't worked directly with the specific languages you're seeking, my proficiency in a variety of programming languages, understanding of different development lifecycles, and ability to quickly learn new technologies make me a versatile asset. Additionally, I am well-versed in architectural documentation and source code management, so I can confidently navigate and understand your codebases. Your project excites me because it requires more than just finding code - it's about the story behind those codes: their sizes, deployment details, and important artifacts. In my previous roles, I've worked on diverse projects for government agencies and healthcare institutions—developing customized applications from scratch and adapting existing systems to satisfy specific industry requirements. This experience has honed my ability to work with complex systems while highlighting the importance of data security and privacy. Lastly, my commitment to clear communication, timely delivery, adaptability, and following robust development procedures will ensure that our collaboration is smooth and efficient. Let's work together to unveil those hidden gems from the past that can potentially revolutionize your healthcare workflows today!
₹200,000 INR in 7 days
0.0
0.0

I have immediate access to a full-source, enterprise-grade VB6 application purpose-built for the Transport sector. This system was designed to handle transport services and it was sunset now. I understand you need to move fast, and I can facilitate a smooth handover of these legacy assets. Below are the details you requested: Language and Version: Visual Basic 6.0 Original Deployment Details: Windows environment, utilizing Oracle for the database backend, with ActiveX Data Objects (ADO) managing the data access and middleware communication. Size & Scope: A comprehensive monolithic desktop architecture built to handle real-world operational workflows. Key modules include fleet/vehicle management, dispatch scheduling, vendor and driver profiles, and automated billing/invoicing logic. Available Artifacts: Complete packaged source repository (.vbp, .frm, .bas, .cls files) Database schemas Workflow logic and architecture overview Original Code. If this aligns with your need for a complete, real-world VB6 codebase and its accompanying artifacts, I am ready to formalize the transfer logistics.
₹200,000 INR in 7 days
0.0
0.0

Rahul here, a software developer with 10+ years of experience working across legacy enterprise stacks including classic .NET Framework, Java, and C/C++. Finding production-grade legacy healthcare source code with full SDLC documentation is like searching for a needle in a haystack. Most repositories are lost, poorly documented, or stripped of the artifacts that prove real-world deployment. I have worked with large-scale Windows-based enterprise systems and understand exactly what production pedigree looks like. If I have matching assets, I will outline everything clearly so you can assess and move fast. Let's connect.
₹230,000 INR in 21 days
0.0
0.0

Hello, Your requirement is highly specialized, and I understand you’re specifically looking for real-world, enterprise-grade legacy systems rather than sample/demo applications. I have experience working with legacy modernization, enterprise migrations, and maintaining production-era systems across older Microsoft and enterprise stacks. Legacy Stack Experience / Availability Areas: • Classic .NET Framework applications (2.0–4.x) • Java 6/7 enterprise systems • C/C++ Windows applications • VB6 legacy desktop/client-server systems • Healthcare workflow and records-management architectures • SQL Server / Oracle / DB2-backed enterprise systems • Legacy build/deployment environments and migration planning Potential System Characteristics: • Multi-module enterprise architecture • Role-based authentication and permissions • Reporting and batch-processing workflows • Healthcare/patient-management logic • Billing, scheduling, and records workflows • Windows Server deployment environments Artifacts I can help provide or reconstruct where available: • Full source repositories / packaged archives • Database schemas and configuration files • Build/deployment scripts • Architecture and module documentation • User manuals and operational notes • Test scenarios and SDLC references Best regards, Arun
₹200,000 INR in 20 days
0.0
0.0

Hello, I can help you acquire, validate, and organize enterprise-grade legacy healthcare applications built using COBOL, VB6, Java 7, classic .NET, Fortran, C/C++, RPG, and Visual FoxPro. Solution Approach: Requirement Analysis Review stack, healthcare workflow, deployment history, and available SDLC assets. Source & Repository Validation Verify archived ZIPs, repositories, dependencies, and production-grade source integrity. Environment Reconstruction Recreate original Windows server setup, database connections, middleware, and build configurations. Codebase Assessment Analyze architecture, modules, LOC, integrations, and maintainability. Artifact Consolidation Organize source code, deployment scripts, manuals, schemas, test suites, and technical documentation. Workflow Verification Validate healthcare workflows such as billing, patient management, scheduling, EMR, and reporting.
₹200,000 INR in 15 days
0.0
0.0

With over a decade of experience in software development, I have acquired an extensive range of skills, including expertise with different programming languages and frameworks. While my specialization is on Salesforce technologies such as Apex and Lightning Web Components (LWC), this has enabled me to gain a deep appreciation for diverse codebases, such as COBOL, Fortran, classic .NET Framework, Java 7 or earlier, C/C++, VB6, or RPG. As a technical architect who has built various scalable, high-performance solutions across multiple domains, including sales and service industries just like the healthcare workflow you're targeting, I understand the complexities and unique challenges that these older enterprise stacks pose. Typically involved in end-to-end development and implementation projects for my clients, I know the value of thorough documentation and have a meticulous approach when it comes to maintaining SDLC assets. As needed in your project description - architecture docs, user manuals, test suites - I possess an organized repository of these artifacts that can be shared securely with you.
₹150,000 INR in 1 day
0.0
0.0

Hello, Resonite Technologies has experience working with enterprise legacy systems, modernization projects, and large-scale business applications across healthcare and operations domains. We may be able to assist with access to relevant legacy codebases and archived enterprise application assets matching your requirements, including classic .NET Framework, Java, C/C++, and VB-based systems originally deployed in Windows production environments. Available details can include: ✔ Language/version and architecture overview ✔ Deployment environment & database stack ✔ Module structure and application scope ✔ SDLC artifacts, build/deployment scripts, and documentation ✔ Legacy healthcare workflow components where applicable Our team understands the importance of preserving production-grade architecture, maintainability, and operational workflows in legacy enterprise systems. We are ready to discuss your exact requirements, review relevance quickly, and move forward with secure transfer and evaluation processes. Best regards, Resonite Technologies
₹249,000 INR in 7 days
0.0
0.0

Having been in the programming scene for over ten years, I have built a deep understanding of various legacy stacks that are relevant to your project including C/C++, VB6, and Java 7. My extensive knowledge in these languages allows me to read and understand code effectively, even without ample documentation. In addition, my proficiency in current and widely used languages such as C#, Java, Python and React.js positions me to tackle any compatibility issues that may arise while revamping your legacy systems. In terms of the size and scale that you're looking for, I've had experience dealing with large codebases consisting thousands of lines of code (LOC). Although I'm not privy to what exactly your project entails, rest assured that my expertise allows me to navigate through complex code structures efficiently. Coupled with my understanding of SDLC processes, I can help you decipher purposefully obscure code, ensuring smooth integration with your existing systems. Finally, being Brazilian has its advantages; developing markets often had a profound dependency on legacy stacks such as COBOL or Fortran which are still extensively utilized in sectors like healthcare. Consequently, my experience working on such projects matches up well with your requirement. With timely response and transfer logistics formalized directly after confirming relevancy, together we
₹200,000 INR in 5 days
0.0
0.0

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