The operating system for web studios
Your studio, one stack.
The all-in-one platform for people who build the web.
Clients, proposals, projects, invoices, books, and the websites you look after, in one place your clients can log into.
25 web studios. Free during the beta.
Built by Stack Mode, a web studio since 2012. We run our studio on it every day.
Stop paying for a dozen tools that don't talk to each other.
- CRM
- Proposals
- E-signature
- Project management
- Time tracking
- Client portal
- Invoicing
- Accounting
- Password manager
- WordPress dashboard
- Uptime monitoring
- Scheduling
- Team chat
- Design feedback
- Short links
- Email signatures
All of it, in one app built for web studios.
One record, start to finish
From first lead to monthly care plan.
Every step happens on the same client record, so nothing is typed twice and nothing falls between tools.
01One place for every client
Every client, the whole picture.
Open a client and see the whole relationship: the deal, the signed proposal, the project, what they owe, their logins, and whether their website is healthy. No more hunting across six tabs when they call.
- Deals, proposals, projects, and invoices on one record
- Encrypted logins in the vault, one click away
- Live website health beside the account
02Get paid
Proposals they sign. Invoices they pay.
Build an estimate from your own deliverables, turn it into a branded proposal, and know the moment it's opened. Clients sign online. Invoices go out with a pay button, cards are saved, and care plans bill themselves on autopay.
- E-signature with a signing certificate
- View tracking and client questions on the proposal
- Recurring invoices and payment plans on autopay
03Websites
Know before your client does.
StackOS watches every site you look after for uptime, SSL, domain expiry, DNS, malware listings, and speed. Each month your client gets a report that shows the care plan working. Run WordPress sites? Plugins are tracked and flagged for known vulnerabilities too.
- Works however the site is built
- Incidents and alerts the moment something breaks
- Monthly reports clients actually read
04Client portal
Give clients the portal they expect.
Your clients log in to see their projects, approve designs with comments pinned to the page, answer your content requests, pay invoices, share logins safely, and check on their website. It carries your brand, not ours.
- Your logo, your colors, your sending domain
- Approvals and requests with reminders built in
- Free, unlimited client logins
Also inside
And everything else your studio runs on.
Every feature is on every plan. Use what you need today, and the rest is there when you hire, start a care plan, or get tired of your bookkeeping.
Real books
Double-entry accounting, bank feeds, reconciliation, bills, and 1099 prep.
Vault
Encrypted passwords with a passcode lock, shared with clients or teammates when you choose.
Team
Permission levels, team chat, and a calendar, so new hires see only what they need.
Design review
Clients pin feedback to the page and approve on the record.
Time tracking
Timers and entries across tasks, with billable settings.
Bookings
Booking pages so clients pick a time without the email back and forth.
Reviews
Review requests and testimonials for your own site.
Nova
Ask a question and get the answer from your own studio's data.
However you build
Websites, however you build them.
Clients, proposals, projects, the portal, invoices, books, monitoring, analytics, domains, and design review work for every site. StackOS connects to your code and hosting accounts, and if you run WordPress sites, it handles plugins, vulnerabilities, and licenses too.
Development and hostingSites built with
- WordPress
- Webflow
- Framer
- Shopify
- Next.js
- Astro
- Custom code
Connects to
- GitHub
- Vercel
- Cloudflare
- Hetzner
- ServerAvatar
- Stripe
Make it yours
Full control, smart defaults.
StackOS comes set up to work on day one. Change what you need: stages, templates, packages, permissions, the menu order, even the look. Nine themes, a command palette, and keyboard shortcuts for people who live in their tools.
Obsidian
Cosmic
Ledger
Terminal
Terminal Red
Terminal Amber
Dark Pro
Blueprint
Light
Built by a web studio, for web studios
“I've run Stack Mode, a web design and marketing studio, since 2012. We paid for around twenty tools to run the business, and none of them did exactly what we needed. So in 2026 we built one system for all of it, and we've run our studio on it every day since. Our clients loved the portal so much they started asking us to build technology like it for them. Now we're opening it to studios like ours.”
Chris Foti, Owner and lead developer, Stack Mode
Read the storyStack math
One subscription instead of a stack.
Separate tools for each job cost about $216 a month for one person and $865 a month for a five person studio at list prices. StackOS replaces them for $69.95 a month, plus $24.95 for each teammate.
See pricingOne person
Separate tools
$216/mo
StackOS, billed yearly
$69.95/mo
Five person studio
Separate tools
$865/mo
StackOS, billed yearly
$169.75/mo
One tool per job, annual list prices from vendor pricing pages checked October 9, 2026. Your stack may differ.
Questions
The short answers.
What is StackOS?
Who is StackOS for?
Can my clients log in?
Do I have to move everything at once?
How much does StackOS cost?
Run your whole web studio in one place.
Start with one client. See the difference in a week.
25 web studios. Free during the beta.