ArchDocArchDoc
Get started free
Now with real-time collaboration & GitHub sync

The documentation platform built for engineers

Write ADRs, RFCs, and design docs with your team. Embed diagrams, sync to GitHub, and get sign-offs, all in one place.

Start for freeView documentation
Free plan availableNo credit card required
archdoc.app — Design Document
ArchDoc application screenshot

Trusted by engineering teams at

UnskewDataBetterBrandsFitmasterSolutionsCutsAndCurves

Everything you need

Documentation that works the way engineers think

From initial RFC to final sign-off, ArchDoc handles every stage of technical documentation.

Real-time Collaboration

Edit documents simultaneously with your entire team. Live cursors, presence indicators, and instant sync mean no more version conflicts.

Architecture Diagrams

Embed Mermaid and Excalidraw diagrams directly in your docs. Version them alongside your text.

GitHub Sync

Push documents directly to your GitHub repository. Keep your docs in sync with your codebase automatically.

Sign-off Workflows

Request approvals from stakeholders on RFCs, ADRs, and design docs. Track status in one place.

Document Templates

Start fast with built-in templates for ADRs, RFCs, and design docs. Enforce consistency across your team.

Role-based Access

Fine-grained permissions for every team and workspace. Keep sensitive architecture docs secure.

GitHub Native

Docs that live next to your code

Connect your GitHub repository and ArchDoc automatically pushes every document as a versioned Markdown file. Your architecture decisions are always in sync with your codebase — no manual exports, no drift.

Auto-sync on every save
Configurable branch & directory
Full diff history in GitHub
Works with any GitHub repository
Learn about GitHub sync
docs/adr/0001-use-postgresql.mdAccepted
docs/rfc/auth-redesign.mdAccepted
docs/design/caching-layer.mdPending
docs/adr/0002-event-streaming.mdClosed
Sign-off Status · RFC-0042
A

Alice M.

Tech Lead

approved
B

Ben T.

Security

approved
C

Clara K.

Product

pending
D

David R.

CTO

pending
Sign-off Workflows

Get decisions approved without the Slack chaos

Request sign-offs directly on any document. Reviewers are notified instantly and can approve or reject with comments. Track the entire approval chain in one view — no more hunting through email threads.

Learn about sign-offs

Pricing

Simple, transparent pricing

Start free. Scale when you need to.

Free

$0/ forever

Perfect for small teams and personal projects.

  • 2 members
  • 5 documents
  • GitHub sync
  • Mermaid & Excalidraw
  • Basic sign-offs
Get started free
Most popular

BASE

$49/ month

For growing engineering teams that need more. Everything in Free, plus:

  • 5 members
  • 15 Documents
  • Priority support
  • Audit logs
  • SSO (Coming soon)
Start free trial

PREMIUM

$599/ month

For enterprises that commit to documentation as a strategic asset. Everything in Base, plus:

  • 50 members
  • Unlimited documents
Register

Frequently asked questions

Still have questions? Contact support

Does ArchDoc have a free plan?
How does GitHub sync work?
What document types are supported?
Is my data secure?

Ready to fix your docs?

Join engineering teams using ArchDoc to write better documentation, faster. Free plan available — no credit card required.

Start for freeRead the docs