VSDEL is a web-based modeling workspace where the system model lives in a versioned repository — branch it, merge it, review it — and every diagram, table, and analysis is a live view of the same model.
Crash-safe check-ins, branches and sandboxes, merges with conflict resolution, named baselines, and model reviews with diff narration — the workflows you expect from code, applied to the system model.
Packages, structure, interconnection with ports, use cases, states, activities, requirements, parametrics, sequences, matrices, dashboards, 3D orbital visualization, and the SysML v2 textual notation — edit in any view, every other view follows.
Stick-figure actors, hollow generalization triangles, ports on the part boundary, «include»/«satisfy»/«import» dependencies — diagrams your reviewers already know how to read, exportable as PNG.
Trace satisfy/verify relationships, then let parametric constraints compute the verdict: a mass budget reads ✓ 2.48 kg ≤ 2.5 against the live roll-up, recomputed on every commit and merge.
Packages with «import» dependencies, multiple named diagrams per view type, a containment tree with full disclosure — model organization is versioned model data, not workstation state.
An assistant that reads the live model through the same standard API as any client — and every edit it proposes lands as a staged change in your working set, reviewed and checked in like any human edit.
OMG Systems Modeling API for programmatic access; import from No Magic/Cameo (XMI), ReqIF, and FMU; export XMI, ReqIF, and a generated specification document from any commit.
Per-project roles, pessimistic check-out locks when you need them, live presence and sync, per-user staged changesets, and atomic check-ins — collaboration without trampling.
Every element — parts, requirements, states, packages, even diagrams themselves — is a versioned element in the model repository. Stage changes as you work, review them in the check-in drawer, and commit atomically. Branch a sandbox for a trade study, merge it back with conflict resolution, or open a review and let a colleague approve it. History is first-class: any commit can be diffed, tagged as a baseline, or exported as a document.
VSDEL is in active development with a hosted instance running today. We're looking for a small number of systems engineering teams to shape the roadmap — MBSE leads, digital engineering groups, and Cameo refugees especially welcome.