Your servers, under control.
KStack is the hosting control panel your customers log into. Standby watches every machine and pages the right person. Zephyr sells and bills it. All three run on your own servers.
Three products. One each for hosting, operations and sales.
Each is licensed on its own and runs on your own machines. Use one, or all three.
Hosting, under control.
The hosting control panel for servers you own: the panel your customers log into, with websites, mail, DNS, databases, backups, virtual machines, object storage and AI endpoints, and unlimited customers and sites.
- Add a server in one paste. Tick its jobs and KStack sets it up. The panel never holds a login to your servers.
- It stays the way you set it. A setting changed by hand is put back and you are told; a rebuilt server comes back whole.
- Sites keep running. Every server holds its own copy of what to run, even if the panel cannot be reached.
- Every website in its own container. Its own CPU, memory, disk and process ceilings, PHP per site, the web server you prefer per server.
- Backups you can prove. Restore drills every week, single-file restores, and a second copy in the customer’s own S3.
- Resellers in their own brand. White-label panels, custom nameservers, pooled allowances, and customers without limit.
Every machine, under control.
One agent for Linux and Windows, servers and laptops alike. Monitoring, on-call, security, compliance, a service desk for your team and the datacenter itself, in one install on your own server.
- Paging that reaches a person. Escalation chains by severity, rotas and swaps, voice and text through your own telephony account, and one alert, not one per machine, when a large part of your fleet goes quiet.
- Checks from outside, gaps shown as gaps. Probe servers you place, dashboards you lay out, and missing data never drawn as zero.
- Security on what is really installed. Vulnerabilities matched to each machine, patching a few first, a web firewall from one place, a recorded terminal.
- Audit evidence, scored live. ISO 27001, SOC 2, NIS2, DORA, GDPR, PCI DSS and more, with auditor packs and a public Trust Center.
- A status page that stays up. In your brand, on a server of its own, resolved only when the alert has stayed quiet.
- The room, too. Racks, power, IP addresses, hardware health and a service desk with changes and approvals.
Sell it, bill it, support it.
Website, shop, billing, finance, marketing and support desk in one install that you run. No fee per staff member, no cut of your sales.
- A paid invoice becomes a working account. In KStack, cPanel, Plesk or DirectAdmin, with nobody typing anything in, and a missed one suspends it.
- Invoices your accountant will accept. Numbered without gaps, VAT per rate, more than one currency, and a ledger, banking and payroll behind them.
- The whole business in one admin. Catalogue, orders, quotes, bookings, support desk, live chat, leads, campaigns, affiliates and reports.
- Moving from WHMCS or HostBill. A dry run as often as you like, your old invoice numbers kept, and a run you can reverse.
- Your AI assistant, inside the lines. Connect your own; it can only do what the person who connected it may do, and every change is logged.
Runs on the servers you already have
Web servers on Debian 13 or Ubuntu 26.04. Database, mail, DNS, backup and statistics servers on Rocky Linux. Add a server with one pasted command.
One agent for Linux and Windows, on servers, virtual machines, laptops and desktops alike. A Windows desktop app that rings when you are paged.
One install on any Linux server, with its own database and worker. Updates arrive signed and are applied without downtime.
How you start
KStack, Standby, Zephyr or all three. Pick how many nodes each covers and check out.
Your licence key is in your account as soon as the order is paid.
Your install command is in your account too, with your licence key already in it. Updates arrive through the same channel.
Frequently asked questions
Do I need all three?
No. Each is licensed on its own and works on its own: KStack with any billing system, Standby with any servers, Zephyr with any panel. Together, a paid invoice becomes a hosting account and an alert becomes an incident.
What counts as a node?
For KStack, any server or virtual machine you have added, until you remove it. For Standby, any machine running the Standby agent, laptops included. Zephyr is licensed per install.
What happens if a licence lapses?
Nothing already running is switched off. KStack keeps serving but cannot add servers or update; Standby keeps paging and monitoring but cannot add hosts or update; Zephyr keeps billing existing customers but takes no new orders.
Can I see it working before I subscribe?
Yes. Book a walkthrough: tell us what you run today and we will show you the parts that matter to you on a video call.
Start with KStack, Standby or Zephyr
Priced per node or per install, on your own servers. Prices exclude VAT.
See pricing