Virtum

Virtum Builder

Build in the browser. Ship when you approve.

Build applications and websites in the browser, by hand, on a visual canvas or with coding agents, all on Virtum's own copy of your code.

Become a design partner See all 99 features

Private development Design partners Q1 2027 · wider access Q3 2027 (targets)

Why it exists

Software gets built with too many tools and too little control.

Building software usually means a laptop full of tools, assistants holding keys to everything, and changes nobody can trace. Builder puts the editor, the live preview, the design canvas and the coding agents in one governed place. Whoever writes the code, every change is reviewed, approved and recorded before it goes anywhere.

How it works

Start → Build → Check → Ship

  1. 01StartDescribe what you want, import existing code or pick a starter.
  2. 02BuildEdit the code, design on the page, or hand the tasks to coding agents.
  3. 03CheckRun, test, debug and review every change, file by file.
  4. 04ShipApprove it as a merge request, then release it to Deploy.

In practice

A change, start to finish

  1. A customer asks for a contact form on the website.

  2. You describe it in Builder. Planner splits it into three tasks.

  3. A coding agent writes the form, the handler and six tests, in a sandbox.

  4. Security scans the change: no vulnerabilities, no secrets.

  5. You review the diff and approve it. A merge request opens.

  6. It is released to production through Deploy, monitored and documented.

Who it's for

Built for the people who run it.

  • Businesses

    An application built for you, owned by you.

  • Agencies and teams

    Change your own sites and apps without a developer toolchain.

  • Developers

    Agents do the heavy lifting; you keep control.

How it connects

Connected to everything else.

Work passes between Virtum's services on its own. Nothing is retyped, and nothing falls between tools.

  • Builder ↔ Planner · ideas, tasks

    Planner

    Planned tasks become work for coding agents in Builder.

  • Builder → Security · every change

    Security

    Every change is checked for vulnerabilities and secrets.

  • Builder → Deploy · releases

    Deploy

    Releases go straight to your environments.

  • Builder → Docs · what changed

    Docs

    The application documents itself as it changes.

See it end to end →

What it does today

Everything in Builder.

99 features across 12 areas. Search them, or open an area. The roadmap shows what comes next.

99 features
Projects Start, organise and understand every project.9
  • Builder home with recent projects, releases and "jump back in"
  • Start a project step by step, from an AI draft, or by importing code
  • Every new project gets its own git repository
  • Tech stack, branches and last activity for every project
  • Project settings for name, description and stack
  • Discovery that analyses a project's contents
  • Detects whether a repository is an application or infrastructure
  • Detects Terraform, Ansible and CI pipelines in imported code
  • View-only access for people who should see but not edit
Branches and git Every change on its own branch.8
  • Create branches and switch between them
  • See what changed on a branch, file by file, with diffs
  • Mark changed files as reviewed
  • Commit with a message and push to the connected remote
  • Delete a branch and choose to stash, discard or keep its changes
  • Connect GitHub and import repositories as projects
  • Connect GitLab, Gitea, Bitbucket, Azure DevOps or any git host
  • Re-sync a repository and rotate its webhook secret
Code editor A full editor in the browser.8
  • File explorer: create, rename and delete files and folders
  • Upload images, fonts and media
  • Quick open for files, symbols and commands
  • Command palette and keyboard shortcuts
  • Split editor by dragging a file to an edge
  • Problems panel with real compiler and syntax errors
  • Environment variables panel with hidden secret values
  • Templates for web pages, business websites, Node, Python, C and C++
Navigation and refactoring Find your way around any codebase.7
  • Find in file and search across the branch's files
  • Go to definition and hover to see declarations
  • Completion of names declared in other files
  • Find all references and trace impact upstream and downstream
  • Rename a symbol across files, with a preview
  • Find and replace across files, applied all-or-nothing
  • Bookmarks for files and nodes
Build, run and debug Run it, see it and step through it.7
  • One-click build, run and test
  • Live output streamed to a terminal panel
  • Live preview of web pages and multi-file sites
  • Debugger with breakpoints, step over, into and out
  • Inspect variables, watch expressions and evaluate while paused
  • Send keyboard input to a running program
  • Language adapters and run configurations
Visual design canvas Design on the live page; the code follows.7
  • Click any element in the live preview to select it
  • Edit properties visually, saved straight into the real file
  • Component library of ready-made blocks
  • Drag to reorder blocks and edit their content in place
  • Bind blocks to data models and form endpoints
  • Save blocks as reusable patterns
  • Design, Flow, Split, Code and Project map views
Visual logic (Flow) See and edit program logic as a graph.7
  • Node graph: entry points, calls, branches, loops, maths, HTTP requests and more
  • Open a real function as a graph and edit it; the file is updated
  • Wire and unwire nodes; filter data or execution connections
  • Duplicate, delete and group selections
  • Auto-arrange, zoom, fit to view and a minimap
  • Undo and redo, breakpoints on nodes
  • Structural checks that catch graph problems before you run
Models, APIs and testing (Lab) Design data and APIs, then test them.8
  • Data models with typed fields, relations and keys
  • Sample records with validation and schema-change previews
  • API contracts by method, path, model and access level
  • Rehearse API requests in a local simulator
  • Generate project files from your models, review, then apply
  • Data playground with an evaluation trace
  • Write assertions and run them
  • Generate code from the graph, preview it and apply it
Checkpoints and planning Never lose work; plan what is next.4
  • Named checkpoints you can restore at any time
  • Export and import snapshots of your work
  • Planning queue for features, reviews and refactors, tied to files
  • Assistant suggestions that follow what you are doing
AI generation and coding Code written for you, landed only when you approve it.15
  • Describe an app and have AI draft and scaffold it
  • Specialist AI skills for planning, architecture, security, compliance and performance
  • Frameworks such as Laravel, FastAPI and NestJS
  • Apps made of several services
  • AI review of every generation with a summary and advice
  • AI coding runs: a task and a repository in, a change out
  • Coding agent sessions in an isolated sandbox
  • Your own AI keys, or a ChatGPT Business or Enterprise plan, for coding sessions
  • Model, spending cap and time limit for every run
  • Changes arrive as a branch and a draft pull request, merged only with your approval
  • Changes that add a credential are blocked automatically
  • Assistant reads your code, searches it and proposes changes
  • Ask Virtum to build from the Plan panel; progress and the diff follow in chat
  • AI for code review, tests, migrations, documentation and refactoring
  • Send ideas on to Planner as tasks
Code intelligence Understand your code before you change it.14
  • AI review that ranks the most suspicious files
  • Duplicate and near-duplicate code
  • Dead code, unused exports and stale feature flags
  • Checks against your own architecture rules
  • Unsafe or suspicious packages flagged before install
  • Hidden prompt-injection text and invisible characters detected
  • Untested classes, ranked by importance
  • Flaky tests that fail only some of the time
  • Secrets added in a change detected
  • Merge audits with risk ratings and review flags
  • Split a large commit into smaller ordered commits
  • How much AI-written code is still in use, by model and agent
  • Trace a defect back to the AI change that wrote it
  • Quality gates for score, test coverage and commit references
Release to Deploy From branch to running service.5
  • Release a branch to a chosen Deploy environment and target
  • Package static sites as release bundles
  • Build container images for Kubernetes
  • Release handoffs listing the software included
  • A deployment contract with each app, including its infrastructure needs

Connected today

Works with what you already run.

Every integration runs through the same approvals and audit trail, and new ones are added as data, so the list keeps growing. How integrations work →

Repositories

  • GitHub
  • GitLab
  • Gitea
  • Bitbucket
  • Azure DevOps
  • Any git host

AI coding

  • Claude Code
  • OpenAI Codex
  • Virtum's own coder

Shared by every service

Plus the whole Virtum platform.

Put Builder to work.

Design partners get early access and help shape what comes next. Or let Virtum run it for you as a managed service.

Become a design partner Prefer we run it for you?