Architecture Documentation Platform

Turn messy system knowledge
into crystal-clear architecture docs.

ArchDocTool helps you capture, visualize, and evolve your architecture in one place. Create living diagrams, models, and narratives your whole team can trust.

Visual system maps

Zoom from organization view down to services, queues, and databases in seconds.

Always up to date

Keep architecture in sync with your repos, environments, and deployments.

Decisions, not just diagrams

Capture ADRs, trade-offs, and timelines so changes make sense months later.

Risk-aware change

See dependencies and blast radius before you ship a risky change.

Start your first workspace

30-day free trial. Log in or register in under a minute — no long setup, just start mapping.

What you can do

Design your architecture story

  • Create system, container, and component diagrams in a consistent C4-inspired style.
  • Model environments, data flows, and integrations across teams and vendors.
  • Share curated views for onboarding, incident reviews, and design sessions.
  • Track how your architecture evolves over time without losing past context.
Log in / Register to explore
Simple pricing

Start free, bring your whole team

Every new workspace includes a 30-day free trial — no credit card required to get started.

Team workspace

Create, update, and own your architecture

£50 / month for unlimited users
for the first 12 months
  • Build and edit diagrams, models, and documentation
  • Manage systems, environments, and integrations
  • Invite readers to view shared architecture views
Start your 30-day free trial

Reader access

Browse and explore without editing

Included / in your plan
  • View diagrams, models, and curated system maps
  • Follow architecture changes and design decisions
  • Ideal for stakeholders, onboarding, and incident reviews

Add as many editors and readers as you need — no per-seat fees for the first 12 months.