Best Document Collaboration Apps for iPad

ONLYOFFICE is an open-source project that offers cloud-based and self-hosted solutions for business of all sizes. The key product is ONLYOFFICE Docs, a secure office suite that seamlessly integrates into the most popular platforms, e.g. Odoo, Alfresco, Confluence, Pipedrive, Redmine, SuiteCRM and more. When integrated, ONLYOFFICE Docs provides the users of your business app with editors for documents, spreadsheets, presentations, forms, PDFs and diagrams. The ONLYOFFICE suite makes it possible to collaborate on office files in real time. The built-in AI assistant is compatible with ChatGPT, DeepSeek, Mistral and other AI providers to ensure a flawless editing experience. You can use Docs within ONLYOFFICE DocSpace, a room-based document collaboration platform that allows you to create dedicated spaces where you can assign access permissions and collaborate with your teammates. With DocSpace, you can store, share and co-edit office files, and even interact with third parties.

Proton Drive is the all-in-one workspace for storing sensitive data and collaborating with your teams, clients, and partners. Collaborate securely without compromising control: Share client files, contracts, and sensitive business documents with full end-to-end encryption. You control who can access what. Set passwords, add expiry dates, 
 or revoke access anytime. Protect all your business data:
Plans come with 1 TB of storage allowance per user, giving your team enough space for all their files and docs. You can always add more storage later if needed. Simplify compliance across industries: Proton Drive supports GDPR, HIPAA, NIS2, DORA, and ISO 27001 compliance out of the box, and has been successfully audited for SOC 2 Type II. There's no need for custom configurations or third-party tools, as this helps you meet regulatory standards with minimal effort.

Apryse (formerly PDFTron) powers the future of document technology. We help businesses, developers, and enterprises handle documents with unmatched speed, accuracy, and security. Whether running in secure server environments or delivering seamless web-based experiences, Apryse makes document workflows smarter and easier. With Apryse, you can: Embed powerful document features directly into your apps — from viewing and editing to collaboration and compliance. Run at enterprise scale on secure server infrastructure, ensuring reliability without cloud dependencies. Deliver seamless in-browser document experiences with responsive, accessible, and feature-rich web capabilities. Trusted globally, Apryse empowers organizations to simplify operations, enhance productivity, and create exceptional document experiences.

Nutrient is the comprehensive solution for all your PDF needs, offering tools that effortlessly integrate and operate PDF functionality across any platform. 1. SDK PRODUCTS Integrate robust PDF functionality into iOS, Android, Windows, web (JavaScript), or any cross-platform technology, providing capabilities such as PDF viewing, markup, collaboration, and more. 2. LIBRARIES Utilize our potent .NET and Java libraries to boost your backend applications with batch processing of redactions and PDF forms, OCR’d scanned text, and editing of PDF documents, directly from your application server. 3. PROCESSOR Our dynamic PDF microservice, Processor, enables swift generation of PDFs from HTML, including HTML forms, along with Office-to-PDF conversions, OCR, redaction, and XFDF merging and exporting. 4. PDF API Use hosted PDF API to generate, convert, and modify PDF documents in your workflows. We manage the development and server administration, letting you focus on what you do best.

Foxit PDF Editor enables users to edit, create, review, collaborate on, share, secure, organize, export, OCR, and eSign PDFs across desktop, mobile, and web. Designed for business professionals, it delivers powerful yet intuitive workflows whether working in the office, at home, or on the go. With enterprise-grade functionality, integrations, and mass deployment capabilities at a cost-effective price, Foxit PDF Editor is a strong alternative to traditional PDF solutions. Available in two editions—PDF Editor and PDF Editor+—the platform supports everyone from individual knowledge workers to large organizations requiring advanced editing, collaboration, and security features. While most editing tools focus only on document creation and revision. Foxit Document Management System (DMS) is included within Foxit PDF Editor, to help store, organize, and manage documents throughout the entire editing lifecycle.

Box helps growing businesses manage and get more value from their content on one secure AI-powered platform. Combining file sharing, document management, workflow automation, e-signature, and AI tools in one place, Box empowers teams to reduce tool sprawl and improve visibility across all their files. Organizations use Box for secure internal and external collaboration, knowledge management, contract lifecycle management, onboarding, controlled documents, and audit-ready archiving. For teams adopting AI, Box is designed to connect AI to business content with permissions, governance, and auditability in one file system. The platform also supports compliance and security needs with features such as access controls, retention, classification, and protections for regulated environments, including support for requirements such as HIPAA and FINRA.

eXo Platform is an open-source digital workplace solutions for growing teams and enterprises, featuring: ✅ Internal Communications ✅ Team Collaboration ✅ Knowledge Management ✅ Productivity and Employee Recognition use cases. eXo stands out by: 👍 its fluid and integrated employe experience, on desktop and mobile 👍 the platform’s ease of use 👍 innovative employee engagement features. eXo Platform is developed on open-source technology and supports open standards. The platform is extensible and interoperable, all services are exposed REST APIs. The platform also offers additional security capabilities, developed in collaboration with highly sensitive clients. With eXo Platform, companies can connect, engage and reward their employees, customers, and partners with its social, engagement and gamification capabilities.

Google Docs is an AI-powered online document platform designed to help individuals and teams create, edit, and collaborate on content in real time. The platform includes Gemini AI features that assist users with drafting documents, organizing ideas, refining writing styles, and generating polished content using simple prompts. Google Docs offers collaborative tools such as live editing, comments, version history, document sharing controls, and integrated video meetings to help teams work together efficiently from any location. Users can streamline workflows with templates, smart building blocks, electronic signatures, meeting notes integration, and reusable content snippets for faster document creation. The platform also supports importing and editing popular file formats including Microsoft Word documents and PDFs while maintaining collaborative editing capabilities.

Nextcloud puts your data at your fingertips, under your control. Nextcloud Hub is the leading open source, on-premises content collaboration platform with a strong focus on data protection. It is deployed by tens of thousands of organizations to stay in control of their sensitive content in compliance with privacy regulations like GDPR and HIPAA. Nextcloud presents a unified, comprehensive platform addressing collaboration needs through document sharing, real-time editing, video conferencing, calendaring, mail and other capabilities. This singular approach across mobile, web and desktop interfaces provides a superior user experience and increased productivity. It is designed with an open, modular architecture that enables organizations to optimize their content collaboration both within and outside their organization.

ACE is a quality management software solution for companies of any size, in any stage, in any highly regulated industry. ACE is fully configurable allowing your company to adapt ACE to fit into your exact quality needs. Empower all levels of your organization with intuitive user interfaces, easily search for all your documents and records, and transform your data into actionable intelligence with advanced analytics all on a single platform. Our one-stop software includes: -Office 365 Integration -Inspection Management -Document Management -Risk Management -Product Lifecycle Management -Learning Management -Audit Management -Quality Events -Paperless Validation -Electronic Signatures (21 CFR Part 11 Compliant) -Endless Workflow Configurations -And so much more! ACE comes with everything you need, all included at one price. Every application is included, no more a la carte pricing. No more nickel and diming. One software, endless solutions.

The next-gen collaboration suite. All your chats, meetings, calendars, docs, and emails in one place. These organisations have made Lark their all-in-one solution for collaboration. Lark is a comprehensive productivity superapp designed to streamline collaboration. It combines chat, meetings, document editing,project management, and automation tools in one intuitive platform, simplifying your workflow and enhancing team communication. It suits teams of all sizes, from small groups to large multinational companies. By utilizing Lark Base, teams have the ability to construct a CRM solution that aligns with their present requirements and is capable of expanding along with the business. Additionally, Lark is well-equipped to serve as a project management tool, providing project managers with robust features for planning, tracking, and executing projects effectively.

Slite is the self-maintaining knowledge base: a single, verified source of truth for your team and for the AI agents that work with it (Claude, ChatGPT, Cursor). Slite Agent offers enterprise search from 20+ connected sources such as Slack, GitHub, Linear, Jira, Google Drive, Notion and HubSpot. It spots when docs drift out of date, drafts the fix, and sends every change to a human for review before it goes live. Ask gives cited, permission-aware answers from your docs and connected tools. MCP and a public API are included on every plan, so any AI tool can use Slite as company context. SOC 2 Type II and GDPR compliant, with SAML SSO, SCIM and audit logs on Enterprise. Built for teams of 50 to 1,000 people. Start with a 14-day free trial.

ONLYOFFICE DocSpace is an online document management platform that lets teams and businesses collaborate on office files and interact with their external partners and users. The tool works by creating dedicated spaces called "rooms" with predetermined permissions and flexible user roles. The following types of rooms are available: collaboration rooms for real-time co-authoring, public rooms for file sharing, custom rooms for specific tasks, like commenting and reviewing, form-filling rooms for dealing with PDF forms and VDR rooms for storing and sharing confidential business information. ONLYOFFICE DocSpace comes with collaborative editors and viewers that support working with a wide range of content types, including text documents, spreadsheets, presentations, fillable forms, e-books, PDF files and multimedia files. Within ONLYOFFICE DocSpace, it's possible to connect and use various AI assistants while editing documents. For example, ChatGPT, Google Gemini, Mistral, etc.

Nuclino works like a collective brain, helping teams bring all their knowledge, docs, and projects together in one place. It's a modern, simple, and blazingly fast way to collaborate, without the chaos of files and folders, context switching, or silos. Nuclino is trusted by over 12,000 teams and companies across the world.

Fabasoft Xpublisher is one of the leading providers of editorial and publishing systems in the German-speaking area and part of Fabasphere—Fabasoft’s intelligent, cloud-native ecosystem. With Xpublisher, book and magazine publishers, media companies, as well as public research institutions, institutes, and associations create, manage, and publish their content: from planning and creating structured, media-neutral content, through managing editorial coordination processes, to automated print production and efficient distribution across all digital channels—all in compliance with the highest European data protection standards. The system is supported by the artificial intelligence of partner company Mindbreeze: The AI generates teasers, translations, and texts of the highest editorial quality and improves content reusability through automated tagging.