Sub Systems, Inc. provides a set of document-processing components for software developers. Its core product is TE Edit Control, a rich text editing control, complemented by a large range of converters for formats such as RTF, HTML, DOC, DOCX, PDF, and images. It is closer to a traditional commercial SDK than an online SaaS product: components are delivered as zip packages, which developers copy into their projects for integration.
Its features cover rich text display and editing, tables and nested tables, multi-column layout, headers and footers, print preview, mail merge, revision tracking, text wrapping around images, multilingual text, and RTF report generation. Conversion products support workflows such as RTF/DOC/DOCX/HTML to PDF, images, RTF, HTML, DOCX, and more. It supports Win32, Win64, .NET Framework, .NET Core, C/C++, C#, MFC, WinForm, WPF, ASP.NET Framework, Java, ActiveX, HTML/Javascript, VB6, Delphi, PowerBuilder, and other environments, clearly catering to the traditional enterprise software ecosystem.
The products are mainly offered under commercial closed-source licenses, with DLL source code available for purchase for some versions. TE Edit Control desktop licenses for 1 developer start at $919 on most platforms, while Java starts at $1179. Server licenses start at $1069, and unlimited server licenses start at around $18499. The first year includes standard technical support, patches, and new releases. Annual renewals thereafter are 20% lower than the initial license price. Perpetual licensing requires contacting the company for a quote.
The strengths are a complete product line and a wide range of API/SDK formats, including DLLs, ActiveX, MFC wrappers, samples, and manuals, making it suitable for embedding document capabilities into existing desktop or server systems. The FAQ also clearly states that one year of free standard technical support is included after purchase. The downsides are relatively high pricing, and some web-related options still mention Internet Explorer, ActiveX, and Java Applet, indicating legacy baggage for modern browser compatibility. Documentation is mainly provided as PDFs, help files, and Word manuals, with limited evidence of modern online API documentation or package-manager ecosystem support.
It is best suited to teams maintaining or developing Windows/.NET/Java enterprise software that need local document editing and format conversion, especially in scenarios where cloud services cannot be used. The crawled text does not specify access or payment availability from mainland China, so this remains unknown. If you need a more modern document-processing ecosystem, compare it with Aspose.Words, Syncfusion, DevExpress, Telerik, ONLYOFFICE Docs, or LibreOffice SDK.
β This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on rtftools.com official site.
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