Lucid Train compared with IcePanel.
IcePanel models what you intend. Lucid Train reads what you built.
IcePanel is a web-based collaborative modelling tool built around the C4 model: you build a central model of objects and relationships by hand, and changes propagate across every diagram that uses them. Lucid Train is a desktop application that derives diagrams from your repository, so there is no model to author or maintain. The trade is direct. IcePanel gives you a curated, intentional model several people can work in; Lucid Train gives you an accurate picture of what is actually there, generated locally, with no browser and no upload.
Manual model versus generated view
IcePanel's central model is its strength: define an object once and every diagram referencing it stays consistent, which removes the classic problem of six diagrams disagreeing about the same service. It is also its cost, because somebody has to build and maintain that model, and a model nobody has updated in six months is confidently wrong in a way an out-of-date generated diagram is not.
Intent is expressible in one and not the other
A hand-built model can say a service should not talk to that database. A generated diagram cannot say that, because it shows what exists rather than what was meant. If your primary need is agreeing and communicating an intended architecture across a team, that expressiveness matters and it is a real reason to choose IcePanel.
Where the code cannot leave
IcePanel is browser-based and hosted, with single-tenant environments and data residency available on its enterprise tier. Lucid Train is a desktop application that reads the repository locally and can run entirely against local models with no network at all. For teams whose code cannot be uploaded, that is not a preference but a requirement.
The diagram as an implementation input
The mechanism Lucid Train has that IcePanel does not is the return path: a finished diagram becomes a specification that starts a coding turn in the same window on the same repository. IcePanel's flows feature annotates a diagram with the steps of an interaction, which is genuinely good for explaining a system, but it does not produce code.
Side by side
| Lucid Train | IcePanel | |
|---|---|---|
| Where it runs | Desktop app | Browser, hosted |
| Diagram source | Generated from the repo | A model you author |
| Real-time collaboration | No | Yes |
| C4 support | Context and container views | Built around C4 |
| Expresses intended architecture | No | Yes |
| Runs fully offline | Yes, with local models | No |
| Diagram to code as a specification | Yes | No |
| Free tier | CLI free and open source | 5 editors, 100 objects |
| Paid | CLI free and open source; desktop $3/month, 7-day trial, no card | $40 and $80 per editor per month, annual |
Questions
Related
- Lucid Train vs CodeVizSame starting point, generated from code. Different answers to what the diagram is for.
- Lucid Train vs GitDiagramGitDiagram needs no install to look at a public repo. Lucid Train is for the one you work in every day.
- Lucid Train vs D2D2 is a language you write. Lucid Train reads the code and writes the graph for you.
- Lucid Train vs MultiplayerMultiplayer starts from a production incident. Lucid Train starts from the shape of the code.
Last updated