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The Transmission Control Protocol (TCP) is a core network protocol that ensures reliable, sequential, and error-checked delivery of data between devices over IP networks. It is fundamental to many internet applications, including web browsing, email, and file transfer. TCP support enables developers to create distributed applications capable of exchanging structured data over both internet and local network connections. This ensures stable and consistent communication between clients and servers, making it ideal for scenarios like real-time processing, remote procedure calls, and service-oriented architectures that require dependable connectivity.
Several .NET communications and messaging components offer TCP features including:
For an in-depth analysis of features and price, visit our comparison of .NET communications & messaging components.

Every year, ComponentSource recognizes our Top 100 bestselling publishers and products with awards. These honors are determined by the total USD value of sales from our customers around the world, providing a realistic perspective on the products that are in high demand. Consequently, these awards offer some of the most comprehensive and reliable data on the market size and trends for software components and development tools on a global scale.
This year's Top 5 Product Awards have been awarded to:
Products have each been allocated a Top 5, Top 10, Top 25, Top 50 or Top 100 Bestselling Product Award for 2025 based on the following ranking:
See our Product Awards 2025 for the full Top 100 Bestselling Products in 2025.
This year's Top 5 Publisher Awards have been awarded to:
Publishers have each been allocated a Top 5, Top 10, Top 25, Top 50 or Top 100 Bestselling Publisher Award for 2025 based on the following ranking:
See our Publisher Awards 2025 for the full Top 100 Bestselling Publishers in 2025.

LEADTOOLS PDF presents a comprehensive toolkit for developers seeking to integrate robust PDF functionality into their applications. This solution enables efficient management of PDF files, offering features such as precise text, image, hyperlink, and metadata extraction, alongside complete control over document pages. The inclusion of the LEADTOOLS PDF Optimizer further facilitates web preparation through linearization and compression. Use cases range from document management systems and content processing applications to solutions requiring efficient PDF viewing, editing, and conversion capabilities.
LEADTOOLS PDF provides the ability to incorporate interactive PDF form functionality into software applications, enabling the creation and manipulation of fillable PDF documents. This feature facilitates efficient data collection directly within PDF files, minimizing manual data entry and potential errors. Programmatic access to form fields allows for the automation of data extraction and processing, leading to enhanced application efficiency and an improved user experience for individuals interacting with digital forms. This capability supports diverse use cases, including automated data gathering, digital document signing processes, and the creation of dynamic, user-friendly document interfaces.
LEADTOOLS PDF is licensed per developer and per application, requiring a development license for each programmer using the SDK and a separate license for each application developed. For deployment, a runtime license is needed, with options for desktop, concurrent, or server licenses depending on the application's use. See our LEADTOOLS PDF licensing page for full details.
For more information, visit our LEADTOOLS PDF product page.

Chart support in a spreadsheet component refers to the ability to create, render, and manipulate various types of charts - such as line, bar, pie, and area charts - all within the spreadsheet environment. This functionality allows spreadsheet developers to present data visually and dynamically, without needing to rely on external charting libraries. The integration of charting capabilities enhances the end-user experience by making complex data more understandable. For developers, this reduces the need for separate visualization components, improves performance through tighter integration, and simplifies the deployment of data-centric applications.
Several .NET Winforms spreadsheet controls offer chart support, including:
For an in-depth analysis of features and price, visit our .NET Winforms spreadsheet controls comparison.

Oxygen Content Fusion by Syncro Soft is a cloud-based collaboration platform for managing and publishing DITA (Darwin Information Typing Architecture) documentation. It allows authors, reviewers, and publishers to work together on the same content in real time, and to track changes and feedback throughout the documentation process. Oxygen Content Fusion also provides a variety of tools for generating and publishing DITA content in a variety of formats, including WebHelp, PDF, and EPUB.
The Oxygen Content Fusion V8.1 release adds the ability to create new projects more quickly and efficiently with predefined templates. Choose from multiple project templates, such as a blank project, standard DITA structures, or sample projects that demonstrate documentation best practices. This simplifies your initial setup, promotes consistency, and helps you quickly familiarize yourself with optimal project structures and content reuse scenarios.
To see a full list of what's new in V8.1, see our release notes.
Oxygen Content Fusion is licensed per user and is available as an Annual license with 1 year support and maintenance. See our Oxygen Content Fusion licensing page for full details.
Learn more on our Oxygen Content Fusion product page.