Best Document Collaboration Software for Flutter

Apryse (formerly PDFTron) makes documents work harder for you. We give organizations the power to handle the full document lifecycle — from secure server-side processing to smooth web-based collaboration — without relying on third-party services. With Apryse, you can: Integrate advanced document capabilities like viewing, editing, annotation, and e-signature directly into your applications. Deploy on your own infrastructure for maximum control, privacy, and compliance. Scale effortlessly with technology built for high-volume, enterprise-grade workflows. Deliver modern web experiences that are fast, accessible, and reliable across browsers and devices. Trusted worldwide, Apryse helps enterprises, developers, and small businesses simplify workflows, cut costs, and deliver better digital document experiences.

Nutrient SDK enables seamless real-time document collaboration directly within your application, allowing multiple reviewers to work on a single document simultaneously without the need to create synchronization systems or depend on external collaboration tools. It is an ideal solution for developers, product managers, and UX engineers looking to incorporate multi-user feedback for activities such as contract evaluations, markup of technical drawings, field note-taking, and team approvals. With Nutrient Instant operating alongside the Document Engine via WebSockets, it ensures that annotations, comments, and form inputs are synchronized across users and devices on web platforms, as well as iOS and Android. Users can engage in threaded discussions tied to specific regions or annotations, with the ability to resolve or reopen comments. Roles such as viewer, commenter, and editor are managed through JWT-based permissions, which can be modified during the session. The Document Engine also supports self-hosting, ensuring that all documents and collaboration data remain within your own infrastructure, while utilizing a unified document model that encompasses annotation, editing, and signing functionalities.