Fulcrum Wiki is described as 'Fulcrum is the missing link between Google Keep and Google Docs. Create powerful documentation right in your personal Google Drive or collaborate with your team on a shared Drive' and is an app in the Office & Productivity category. There are six alternatives to Fulcrum Wiki for a variety of platforms, including Online / Web-based, Mac, Windows, Self-Hosted solutions and Linux. The best alternative is Nuclino, which is free. Other great apps like Fulcrum Wiki are Confluence (Paid), Slite (Freemium), Foam (Free, Open Source) and XWiki (Free, Open Source).
Nuclino is the easiest way to organize and share knowledge in teams. Create real-time collaborative documents and connect them instantly like a wiki. Use the tree, board, and graph view to explore and organize your knowledge visually.
Foam is a personal knowledge management and sharing system inspired by Roam Research, built on Visual Studio Code and GitHub. You can use Foam for organising your research, keeping re-discoverable notes, writing long-form content and, optionally, publishing it to the web.