Notion and Confluence are tools. KnowledgeForge is the practice that turns the tool's contents into a layer AI can read. We're tool-agnostic on the storage — if you already have Notion, we work in Notion. If you've got SharePoint, we work in SharePoint. The deliverable is the structure, the governance and the eval framework, not the software licence.
If you don't already have a place for it, we'll usually recommend Obsidian — local-first, file-based markdown, no per-seat licence, and exactly the structure a context layer needs. But that's a recommendation, not a lock-in.