Vectr is a free, web-based vector graphics editor that can be used to create diagrams, illustrations, and more.
One of the most popular free Visio alternatives is Lucidchart (free tier). While the free version limits users to 60 shapes per diagram and three active documents, it provides a clean, drag-and-drop interface and real-time collaboration. Another strong contender is Draw.io (now integrated into diagrams.net). This open-source tool is entirely free, works in a browser or as a desktop app, and supports importing Visio files (.vsdx). It offers a vast library of shapes, cloud storage integration (Google Drive, OneDrive, Dropbox), and no watermarks on exports — making it perhaps the most direct free replacement for basic Visio tasks. free visio link
Note: Since "free Visio" usually refers to a time-limited trial (typically 30 days) provided by Microsoft, ensure your link points to microsoft.com/microsoft-365/visio/ to ensure safety and authenticity. Free Visio Links Handbook