Sibe is a collaboration-first cloud CAD Document Management system built for mechanical engineering teams using SOLIDWORKS. It helps teams manage CAD files, preserve references, control revisions, and collaborate securely. With Sibe, engineers can check files in and out, manage versions, track history, and work on individual parts or subassemblies directly from a native SOLIDWORKS add-in. This helps prevent accidental overwrites, broken references, and merge conflicts, even when teams are working concurrently or offline. Sibe also includes web-based collaboration tools for non-CAD stakeholders. Teams can share projects, specific versions, or released revisions with vendors, customers, manufacturing teams, and reviewers on any device. Unlimited web visitors are free, and access controls help protect IP by managing roles, permissions, and download rights. Because Sibe is cloud-based, there are no servers, VPNs, or heavy admin work required. Teams can start quickly, avoid complex upfront migration, and build a controlled engineering workflow from design through approval and release.