Microsoft SharePoint Alternatives for Windows

ownCloud is a powerful, self-hosted open-source platform for file sync, share, and collaboration. It provides a private cloud alternative, giving users full control over their data while offering secure and convenient access from anywhere.

Nextcloud is an open-source, self-hosted platform for file synchronization, sharing, and collaboration. It provides a private alternative to commercial cloud storage services, offering a comprehensive suite of tools including file management, calendar, contacts, and notes, all under your control.

Tiki Wiki CMS Groupware is a free and open-source, all-in-one web-based application for collaboration and management. It combines a powerful wiki engine with comprehensive features for content management, project tracking, workflow, and office functions, making it a versatile solution for diverse organizational needs.

Samepage is a comprehensive team collaboration platform that integrates project management, task management, real-time communication, and file sharing into a single, intuitive interface. Designed to streamline teamwork, it helps teams stay organized, communicate effectively, and manage projects efficiently, regardless of location.

Tresorit is a leading cloud storage and collaboration platform for businesses, prioritizing end-to-end encryption and zero-knowledge architecture. It offers secure file sharing, synchronization, and online backup, ensuring data privacy and compliance with stringent regulations.

XWiki is a powerful, open-source wiki software platforms written in Java, designed for creating collaborative knowledge bases, documentation, and collaborative workspaces. With a strong emphasis on extensibility, it supports multiple languages, real-time collaboration, and a wide range of features for content management and team productivity.

eXo Platform is an open-source enterprise social collaboration platform designed to connect employees, share knowledge, and improve communication and productivity within organizations. It offers a comprehensive suite of tools including social networking, document management, project management, and real-time communication features.

Internxt Drive is a privacy-focused, decentralized cloud storage service offering robust encryption and security. It ensures user data privacy through end-to-end encryption, client-side encryption, and a zero-knowledge architecture. Files are fragmented and distributed across a peer-to-peer network, enhancing security and preventing single points of failure. It provides anonymous file sharing, selective synchronization, and cross-device access.

Alfresco Community Edition is a powerful open-source enterprise content management (ECM) system offering robust document management, collaboration, and workflow capabilities.

Open Atrium is a powerful open-source collaboration and project management platform built on Drupal. It provides a modular framework to create customized intranets, team sites, and project workspaces, facilitating communication, document sharing, task management, and more within organizations.

HumHub is a free and open-source social network software and framework designed to empower teams and businesses with a platform for effective collaboration and communication. It provides a centralized hub for projects, tasks, and social interaction within an organization.

Sohodox is designed to be the simplest document management system specifically for small businesses, aiming to reduce paper clutter and improve organization with features like easy filing, tagging, searching, and workflow automation.

Globodox is a robust document management system designed for small to medium-sized businesses to streamline document handling, improve organization, and enhance security. It offers features like scanning, workflow automation, and secure sharing to help transform paper-based processes into an efficient digital workflow.

Portofino is an open-source web application framework designed for Java and Groovy developers. It simplifies the creation of enterprise-grade web applications by providing robust features for CRUD operations, content management, and business logic implementation.