
SurveyJS is a set of four open-source JavaScript libraries that offer the benefits of a tailor-made in-house survey application, while considerably reducing the time and resources needed to deploy the system. These libraries are independent of specific server code or database requirements and seamlessly integrate with popular JavaScript frameworks, including React, Angular, Vue.js, jQuery, Knockout, and more. They are designed to communicate with any server that can handle JSON requests, ensuring compatibility with various server architectures and databases.
The product family is composed of:
- An open-source MIT-licensed rendering library that renders dynamic JSON-based forms in your web application, and collects responses.
- A self-hosted drag & drop form builder that features an integrated CSS-based theme editor and a GUI for conditional rules. It automatically generates JSON definitions (schemas) of your forms in real time.
- PDF Generator, a library that renders SurveyJS surveys and forms as PDF files in a browser;
- The Dashboard library that allows you to simplify survey data analysis with interactive and customizable charts and tables.
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JOpt.TourOptimizer is an enterprise optimization engine for route planning, scheduling, and resource allocation across logistics, transportation, dispatch, and field service operations. It is built for organizations that need to solve complex planning problems under real-world business constraints rather than simple consumer-grade route calculation. The platform supports vehicle routing and scheduling scenarios such as VRP, CVRP, VRPTW, pickup and delivery, multi-depot planning, heterogeneous fleets, and workforce scheduling.
JOpt.TourOptimizer can model time windows, working hours, visit durations, capacities, skills and expertise levels, territories, zone governance, overnight stays, alternate destinations, and custom business rules. This makes it suitable for production deployments where feasibility, transparency, and operational reliability matter. It is designed to generate practical plans that help teams balance travel time, service commitments, workload distribution, and operational cost in demanding enterprise environments.
The solution is available both as an embedded Java SDK and as a Docker-based REST API with OpenAPI and Swagger support. This allows software vendors, enterprise developers, and system integrators to embed advanced optimization into TMS, ERP, CRM, WMS, dispatch systems, customer platforms, and field service applications. With support for scalable integration and modern service architectures, JOpt.TourOptimizer helps organizations improve planning efficiency, service quality, SLA compliance, transparency, and operational resilience at scale. It also supports enterprise integration strategies that require reproducible optimization runs, structured outputs, and flexible deployment models.
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TCPDF
TCPDF stands out as one of the leading open-source initiatives globally, with millions of daily users and integration in thousands of content management systems and web applications. It operates without the need for external libraries for its core functionalities, supporting various standard and custom page formats, margins, and measurement units. Additionally, it accommodates UTF-8 Unicode and right-to-left language support, as well as a diverse range of font types including TrueType Unicode, OpenType Unicode, and multiple other formats, complete with font subsetting capabilities. The library also provides methods for publishing XHTML combined with CSS, JavaScript, and form elements. Users can incorporate images and graphics through transformation methods, with native support for JPEG, PNG, and SVG formats, as well as compatibility with all images supported by GD, including formats such as GIF, BMP, and XBM. Automatic management of page headers and footers enhances usability, while robust document security features include encryption up to 256 bits and digital signature certifications. Additionally, it offers transaction capabilities for UNDO commands and supports various PDF annotations, enabling links, text, and file attachments to be seamlessly integrated into the documents. This comprehensive functionality makes TCPDF an invaluable tool for developers and users alike.
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String-O-Matic
String-O-Matic allows you to search and replace multiple strings in multiple files. It was specifically designed for computer programmers who work on large projects that have many source code files. However, any type of file can also be used, even HTML. Filenames can be searched and replaced (mass renaming). Regular expressions, case sensitive, whole-word and whole-line searches can all be supported. Supported formats include ASCII, Unicode and UTF-8. Every string that is replaced or found is recorded in a detailed log. You can trust your files to this rock solid program.
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