Google Keep

Capacities is a collaborative knowledge management and note-taking platform designed for teams to capture, organize, and share information in a structured workspace. Key features include relational notes (linking pages like a lightweight database), real-time collaboration, nested workspaces and permissions, embedded media and attachments, full-text search, integrations with common tools (APIs, webhooks), and export options. Benefit: turns scattered team knowledge into searchable, connected documentation that speeds onboarding, decision-making, and project work.

Cryptee is a secure, privacy-first web app from Estonia for encrypted document and photo management – featuring end-to-end encryption, ghost folders, and offline access.

Disroot is a community-run, privacy-respecting online platform that offers a suite of open-source cloud services for individuals and groups. Key features include email, file storage, collaborative document editing, calendar and contacts (CalDAV/CardDAV), chat and Mastodon hosting, Nextcloud-powered file sync, and straightforward account migration/backup options. Services are run on federated, libre software and funded by donations; there are no ads or commercial tracking. Benefit: provides a trustworthy, privacy-focused alternative to mainstream cloud providers for collaboration and personal data control.

Filen is a cloud-based file management and collaboration platform designed to help users store, share, and manage their documents securely. It offers features such as file storage, version control, and real-time collaboration, allowing teams to work together efficiently regardless of their location. Filen emphasizes data privacy and security, providing end-to-end encryption to ensure that users' files are protected. The platform is user-friendly and supports various file types, making it suitable for both personal and professional use. With its focus on collaboration and security, Filen aims to enhance productivity and streamline workflows for individuals and organizations.

Joplin is a free open-source app for notes and tasks, supporting Markdown, end-to-end encryption, and sync via services like Dropbox or Joplin Cloud.

Kolab Now is a hosted groupware service providing email, calendar, contacts, file storage, and collaboration tools for individuals and organizations. Key features include webmail with IMAP/SMTP access, shared calendars and address books (CalDAV/CardDAV), document and file sync, task management, end-to-end and transport encryption options, granular user and group permissions, and professional support with hosted accounts on European servers. Benefit: centralizes team communication and collaboration in a secure, managed environment with tools for scheduling, file sharing, and organized workflow.

Turtl is an open-source app for secure notes, passwords, and files. It uses strong encryption, supports Markdown, and syncs across platforms (except iOS).