Your whole organisation, behind one sign-in.
HDQTRS is the office suite for a small organisation: a company, a school, a practice, a club. Sign in once, choose how it looks once, and every tool follows — one account covers all of it.
Seven tools. One place.
Each is a full app, not a widget. They share an account, a look and a top bar, so moving between them feels like moving between rooms, not buildings.
A proper inbox on your own domain.
Threads, search, drafts, signatures and attachments, with shared inboxes your team can view or send from by permission. Mail runs on HDQTRS’s own mail server with SPF, DKIM and DMARC in place, so what you send arrives.
Open MailChat
The conversation stays in the building.
Direct messages, groups, pins, image and video uploads, presence and notifications. An assistant room can look things up across HDQTRS — an overdue invoice, a booking, the thread you half remember.
Open ChatCalendar
Bookings your customers make themselves.
Month, week and day views, shared calendars, and public booking links that create a booking and send the confirmation by email — no account needed on their side.
Open CalendarStorage
Files where the team can find them.
Folders, previews and zip downloads, per organisation. Share a file with a link that expires when you say so.
Open StorageInvoices
Invoices that get paid.
Clients, line items and status from draft to paid. Export a PDF, send it by email, and give the customer a public page they can open without signing in. An activity log keeps the history.
Open InvoicesShifts
The rota, without the spreadsheet.
A week of shifts per organisation, each with a role, a time and a person — or left open for staff to request. Requests land with the manager to approve or decline, and everyone sees the same rota.
Open ShiftsDashboard
One view of the week.
Unread mail, overdue invoices, upcoming bookings and the team, in one place. Organisation admin lives here too: members, invites, inboxes and permissions.
Open DashboardSign in once. Choose a look once.
One account, one session, one setting for how everything looks. Pick dark or light and an accent here and the whole page changes; in HDQTRS the choice is kept on the account, so Mail, Chat, Calendar, Storage and Invoices all follow it.
The mark follows too: it is tinted from the accent, not redrawn.
Appearance
Theme
Accent
Applies across every HDQTRS app.
How it’s built.
The short version of what is behind the sign-in page.
Self-hosted on purpose.
HDQTRS runs on a server we operate, not a stack of other people’s services. The apps, the mail server that delivers your mail and the file storage are all ours. The one piece we don’t run ourselves is the database, which is managed and backed up for us. Few moving parts, and we know where each one is.
Nothing goes live unsigned.
Every version is proposed, reviewed and personally approved before it reaches a public address. The build that was tested is the build that ships, byte for byte. If an app comes up wrong after a release it is noticed by us first, not by you.
Small by design.
One design system, one top bar, one account model shared by every app. Fewer dependencies than you would expect and no feature that exists to fill a comparison table.
I built HDQTRS because running a small organisation meant six subscriptions, six logins and six settings pages that never quite matched. I wanted one account and one look across all of it, on a server I understand. I run it myself, and nothing goes live until I have personally approved it. If something is off, email — it reaches a person.
Priced for small organisations.
Free for one person. Paid plans are a flat price per organisation with seats included, then a few pounds a seat after that. No per-app add-ons; every plan has every app.
Annual: pay for 10 months, get 12.
Free
£0One person, the bare bones, for as long as you like.
- All seven apps, one seat
- Mail on an HDQTRS address, 2 GB — not your own domain
- Calendar with one booking link
- 2 GB file storage
- Unlimited invoices; card payments taken through HDQTRS carry a 1% fee, capped at £5 each
Starter
A sole trader or a very small team, on your own domain.
ex VAT
3 seats included · £3 per extra seat
- Mail on your domain, an inbox per seat, 10 GB each
- Chat: direct messages, groups, uploads
- Calendar with shared calendars and one booking link
- 20 GB file storage, pooled — each additional 100 GB is £2 a month
- Invoices: unlimited, PDF, email, public client view, your branding
- Card payments on invoices at cost — no HDQTRS fee
- One organisation
- Email support
Team
Most teamsMost small teams. Shared inboxes and unlimited booking links.
ex VAT
10 seats included · £3 per extra seat
- Everything in Starter
- Shared inboxes and role addresses (hello@, support@)
- Unlimited booking links with email confirmations
- Assistant room in Chat
- 250 GB file storage, pooled — each additional 100 GB is £2 a month, or each additional TB £15
- Up to three organisations under one account
- Priority email support
Company
Several teams, more mail, more room.
ex VAT
30 seats included · £2.50 per extra seat
- Everything in Team
- 25 GB mail per seat
- 1 TB file storage, pooled — each additional TB is £15 a month
- Unlimited organisations
- Next-working-day support
Custom
HDQTRS, modified to the way your organisation works.
ex VAT
50 seats included · £2 per extra seat
- Everything in Company
- Changes to the apps themselves, built for you
- A single-tenant server that is only yours
- Your own mail server on your domain, DKIM and DMARC set up for you
- 2 TB file storage — each additional TB is £15 a month
- Onboarding call and a direct line
Ex VAT. Free stays free. 14-day trial on Starter, Team and Company, no card. Cancel any time; extra seats are pro-rated.