
SurveyJS comprises a collection of four open-source JavaScript libraries that provide the advantages of a customized, in-house survey application while significantly minimizing the time and resources required for deployment. These libraries function independently of specific server code or database needs, allowing for seamless integration with well-known JavaScript frameworks such as React, Angular, Vue.js, jQuery, Knockout, and others. They are built to interact with any server capable of processing JSON requests, thereby ensuring compatibility with a wide range of server setups and databases.
This product suite includes:
- An open-source library licensed under MIT that facilitates the rendering of dynamic JSON-based forms within your web application and captures user responses.
- A self-hosted form builder featuring drag-and-drop functionality, an integrated CSS theme editor, and a graphical user interface for setting conditional rules; it also generates JSON definitions of your forms in real time.
- A PDF Generator library that allows for the conversion of SurveyJS surveys and forms into PDF files directly in the browser.
- The Dashboard library, which enhances survey data analysis through interactive and customizable charts and tables.
We invite you to explore our website and experience our comprehensive demo at no cost. This opportunity will allow you to assess the full capabilities of SurveyJS firsthand.
Learn more

JOpt.TourOptimizer is an enterprise software component for organizations that want to improve how tours, appointments, deliveries, and mobile resources are planned. It helps businesses move from manual dispatching and static rules to automated decision support for logistics, transportation, and field service operations. Instead of focusing only on route calculation, the platform supports end-to-end planning scenarios where cost, service quality, feasibility, and operational consistency all matter.
The solution is designed to handle real operational complexity. Planning logic can include time windows, working hours, visit durations, capacities, skills and expertise levels, territories, zone governance, overnight stays, alternate destinations, and custom business rules. This enables teams to create schedules and routes that better reflect how operations actually run in production environments.
JOpt.TourOptimizer supports a broad range of planning use cases, including vehicle routing, pickup and delivery, multi-depot operations, heterogeneous fleets, and workforce scheduling. It is available as an embedded Java SDK and as a Docker-based REST API with OpenAPI and Swagger support, making it suitable for integration into ERP, CRM, TMS, WMS, dispatch software, customer portals, and field service platforms.
For business software teams, this means optimization can become a scalable part of a larger digital workflow rather than a disconnected specialty tool. JOpt.TourOptimizer helps improve planning efficiency, transparency, SLA compliance, and service reliability while giving software vendors and enterprise IT teams flexible deployment and integration options. It is especially relevant for companies that need optimization technology they can embed, govern, and expand over time as operational requirements grow.
Learn more
websockets
The websockets library provides a thorough implementation of the WebSocket Protocol (RFC 6455 & 7692) suitable for developing both WebSocket servers and clients in Python, with a focus on precision, ease of use, resilience, and optimal performance. By leveraging asyncio, Python’s native asynchronous I/O framework, it offers an advanced coroutine-based API that simplifies the development process. The library has been rigorously tested to align with the standards set forth in RFC 6455, and its continuous integration process ensures that every branch maintains 100% code coverage. Specifically tailored for production use, websockets was the pioneering library to effectively tackle backpressure challenges before they became widely recognized in the Python community. Additionally, it features optimized memory management and employs a C extension to boost performance for high-demand tasks. The library is readily available in pre-compiled formats for Linux, macOS, and Windows, distributed as wheels suited for each system and Python version. With websockets catering to the complex technical aspects, developers can focus on creating reliable applications without being bogged down by the underlying intricacies. This positions it as an invaluable resource for developers aiming to fully exploit the advantages of WebSocket technology, ultimately enhancing the development experience and efficiency.
Learn more
openpyxl
Openpyxl is a Python library specifically created for handling Excel 2010 files in various formats, including xlsx, xlsm, xltx, and xltm. This library emerged because there was a lack of a built-in solution for managing Office Open XML files within Python, and it has its roots in the PHPExcel project. It's crucial to recognize that openpyxl does not inherently guard against certain vulnerabilities, such as quadratic blowup or billion laughs XML attacks; however, these threats can be alleviated by utilizing the defusedxml library. To set up openpyxl, you can easily install it using pip, and it is advisable to do this in a Python virtual environment to prevent conflicts with existing system packages. If you're looking to use a particular version of the library, especially if it contains important fixes not yet made public, you can do so without any hassle. Additionally, you can start using openpyxl without needing to create a physical file on your system; just import the Workbook class and commence your operations right away. As you create new sheets, they receive default names, and should you choose to rename a worksheet, you can access it via the relevant key from the workbook. This straightforward functionality contributes to the popularity of openpyxl among Python developers who deal with Excel files, making it an essential tool in their programming toolkit. By simplifying the process of Excel file manipulation, openpyxl allows developers to focus more on their data rather than the complexities of file handling.
Learn more