Notion vs Red Arch Knowledge Manager

Notion is a cloud workspace for organising personal projects and coordinating work. Its pages, blocks, and databases support note sharing and real-time collaboration, and offline access is available. It runs on the web, Windows, macOS, iOS, and Android, with a Chrome extension also listed. Connections include Slack, Google Drive, Figma, GitHub, Zoom, and Microsoft Teams. Notion supports semantic search, AI search or answers, and version history. The Free plan costs $0 per member per month and includes trial AI capabilities and a trial of Notion AI. Free uploads are limited to 5 MB per file, multi-member Free workspaces have a limited number of blocks, and external guests are limited to 10. Plus costs $10 per member per month, and Business costs $20 per member per month; yearly payment saves up to 20%. Paid plans list unlimited guests. Notion says data is encrypted and private, and that Notion AI does not use customer data to train models unless users opt in. Enterprise workspaces get zero data retention with LLM providers.

Red Arch Knowledge Manager is an open-source, self-hostable platform combining organizational knowledge, AI chat, content management, workflows, customer integration, and learning management. Its AI search answers questions from organizational content using semantic and keyword search with passage-level citations. Folders and spaces can have document and folder permissions that also govern search and AI chat. A visual no-code BPMN builder supports form, schedule, event, and inbound-webhook triggers, plus AI steps, approvals, branching, and notifications. Users can create courses from documents, run server-graded quizzes and AI-graded scenarios, issue certificates, and view learner progress dashboards. A versioned REST API, organization-scoped keys, and HMAC-signed webhooks connect other systems. An MCP server lets assistants such as Claude and Cursor build entities, forms, views, reports, and workflows while respecting permissions. Docker and Compose support deployment. The Apache License 2.0 permits commercial use, modification, and redistribution. The listed plan costs nothing with no per-seat pricing.