Model the whole and its parts.
Holarch is a model-based systems engineering (MBSE) workbench. Take a system from stakeholder needs to verified design in one connected model, in your browser.
Model-based systems engineering
One model behind every view
Requirements, functions, components, interfaces, tests, risks and decisions are entities in one model, built on the Lifecycle Modeling Language (LML) and linked by typed relationships. Documents, diagrams and matrices are views of that model. Change an entity once, and every view that shows it updates.
Class and relationship names as Holarch uses them. A suspect-link check flags traces when a source requirement changes after a baseline.
AI assistance
AI that works inside your model
The AI reads the entities and relationships of your project and proposes changes to them. You review each proposal before it applies, and one undo reverses it.
- Turn a requirements document into functions and an FFBD. Extract functions with their allocated requirements, then get a suggested flow.
- Check and rewrite requirements. An AI quality review judges correctness, feasibility and necessity and offers rewrites, shown word by word.
- Ask questions about Holarch and your model. Answers link to the entities and Help topics they use.
- Draft requirements, test cases and risks from the items you select.
- Generate clipart for a whiteboard when the library has nothing that fits.
Your own key
Use a key from Anthropic, OpenAI, Google Gemini or Azure OpenAI, or your organization's key.
Preview first
Every AI change is previewed and applied as one undo step. Risky changes start unticked.
Restricted projects
Projects marked CUI, ITAR, export controlled or classified block AI.
AI off when needed
Instructors and team admins can turn AI off for their class or organization. Coming soon
The lifecycle, in order
From needs to verified design
Needs and requirements
Write requirements in documents. Check their quality, trace them, and manage approvals and baselines.
Learn more about needs and requirements →Behavior
Decompose functions, generate FFBDs, and run action-diagram simulations.
Learn more about behavior →Architecture
Allocate functions to components. Draw SysML block, internal block and parametric diagrams with units.
Learn more about architecture →Verification
Plan tests in the Test Center. The RVTM shows what is verified and what isn't.
Learn more about verification →Risk and decisions
Run a risk register, risk matrices and weighted trade studies.
Learn more about risk and decisions →Plan and deliver
Use Kanban boards, Gantt charts, budgets and TPMs.
Learn more about plan and deliver →Frameworks
Produce DoDAF and UAF products, including an imported OV-1.
Learn more about frameworks →Collaboration
Work together
- Share a project and give each person a role: owner, editor or viewer.
- Edit at the same time and see who is in the project.
- Work offline. Changes merge when you reconnect.
- Every project keeps earlier versions you can restore.
Whiteboards
Sketch first, then link
Sketch concepts on a whiteboard with more than 6,000 icons, military symbols and systems-thinking shapes. Then link sketches to model items.
Learn more about whiteboards →
For classes
Free for classes
Students and instructors use Holarch free.
Start building your model.