01 / 04
Orders wait for a person
Accounts are created by hand because no provisioning module exists for your panel or API. We build one that creates, suspends and terminates on its own.
Hosting & care
WHMCS development services
Custom WHMCS modules, themes and migrations for hosting businesses. WHMCS development services for hosting companies and SaaS teams: custom addon, registrar and provisioning modules, hooks and API integrations, order form and client-area themes, WHMCS migrations and upgrades, with source code you own.
$149Setup & fixes from
$699Custom module from
MITOur Spaceship module licence
WHMCS should fit your business, not the other way round.
WHMCS runs billing, provisioning and support for a large share of hosting businesses. Out of the box it does not know your registrar, your control panel, your payment provider or the way your team works. Custom WHMCS development closes that gap with modules and hooks built on the documented WHMCS interfaces, so updates do not undo the work.
We build WHMCS modules for hosting companies, domain resellers and SaaS teams, and we run WHMCS ourselves for our own hosting brands. Every module ships as readable PHP that you own.
A good fit for
Hosting companies, domain resellers and SaaS teams that bill in WHMCS and need it to connect to a registrar, panel, API or gateway, or need their order form and client area to match their brand.
Web hosting companiesDomain resellersReseller hosting brandsSaaS teams billing in WHMCSAgencies with WHMCS clientsTeams moving to WHMCS
What we work toward
A WHMCS install where orders provision themselves, domains sync, invoices match the services, and your team can read and change the code.
Signs your WHMCS needs a developer.
02 / 04
Your registrar is not supported
The registrar you want has no module, or only an encoded one you cannot check. We write a registrar module against its API, with sync and TLD pricing.
03 / 04
A module is encoded or abandoned
An old ionCube module blocks a PHP or WHMCS upgrade. We replace it with open code that does the same job.
04 / 04
Checkout looks like a different website
The order form and client area do not match your site. We theme them with child templates so updates stay clean.
What we build in WHMCS.
Each piece is scoped in writing, built on staging and handed over with notes.
Custom addon modules
New features with their own admin pages, client area pages, settings and database tables.
Registrar and provisioning modules
Domain registrars, control panels, VPS and licence APIs, with create, suspend, terminate, sync and usage.
Hooks and API integrations
Hooks on orders, invoices and tickets, plus the WHMCS API connected to your CRM, WhatsApp, n8n or accounting tools.
Themes and order forms
Client area and order form templates built as child themes, matched to your website.
Migrations and upgrades
WHMCS moved to a new server, data moved in from another billing system, and upgrades to new WHMCS and PHP versions.
How a module gets built.
- 01
Scope
We read the API documentation and your current setup, then write down every action the module must handle.
- 02
Build on staging
We develop against a staging copy of your WHMCS version, never against live billing.
- 03
Test with you
You run real orders, renewals and suspensions on staging and sign off.
- 04
Release and hand over
We deploy with a rollback plan, then hand over the code, settings and notes.
WHMCS development pricing.
Spaceship registrar install and setup: $99
Our free module, installed, connected, priced and tested.
Setup and fixes: from $149
Module installs, configuration and small hook or bug fixes.
Order form or client-area theme: from $399
Child templates matched to your website.
Custom module: from $699
Addon, registrar, provisioning or gateway module to a written scope.
Ongoing development: from $1,299/month
About 80 developer hours a month. WHMCS care alone is $99/month.
We run WHMCS for our own hosting brands.
WaseerHost and CO2Host, our own hosting brands, run their customer portals on WHMCS next to a WordPress marketing site. The modules and themes we build for clients come from the same day-to-day work.
We also publish our WHMCS work in the open: the Spaceship registrar module (MIT licence, listed on the WHMCS Marketplace) and WHMCS Dev Skills, an AI agent skill pack for building WHMCS modules.
What we check before release.
Every module action
Each function is run on staging with real API credentials in test mode.
Errors are logged
API calls write to the WHMCS module log, so a failed order explains itself.
Credentials stay safe
Keys live in module settings, never in code or in the repository.
Your version
Tested on the WHMCS and PHP versions you run, with the results written down.
Source code is yours, no ionCube
Staging copy first, production after sign-off
Built on documented WHMCS APIs
Our own registrar module is public on GitHub
Reviews
Reviews on the WHMCS Marketplace
Our free Spaceship registrar module is listed on the WHMCS Marketplace. These reviews are from WHMCS users, about the module.
"it works really well, thank you very much"
"Great module!! Thank You!"
Pick the scope that fits
Starter
Setup & fixes
From $149/ project
For installing and configuring a module, fixing a broken hook or tidying a WHMCS setup.
Who it's for
A hosting business that needs a module installed, a setting fixed or a small hook changed
Delivery
Done in 1 to 3 working days after you give us access
Monthly
No monthly fee
Next tier
A custom module costs more because we design and write new code against your API, where setup and fixes work with code that already exists.
What you get
- Module install and configuration
- Registrar, gateway or server connection set up
- One bug or hook fixed and tested
- Work done on a staging copy first
- Written note of what changed
Not included or billed separately
- WHMCS licence and third-party module licences
- Registrar, panel or payment provider account fees
- Fixing other vendors' encoded (ionCube) modules
- Server hosting for WHMCS
GrowthMost chosen
Custom module
From $699/ project
For one new addon, registrar, provisioning or payment gateway module built to a written scope.
Who it's for
A hosting company or SaaS team that needs WHMCS to talk to a registrar, panel, API or payment provider it does not support today
Delivery
2 to 4 weeks after the written scope is signed off
Monthly
No monthly fee. WHMCS care after delivery is optional, $99/month
Next tier
Ongoing development is a monthly block of developer hours for a roadmap of modules and changes, where the custom module is one scoped build.
What you get
- Addon, registrar, provisioning or gateway module
- Built on the documented WHMCS module and hooks APIs
- Admin and client area screens where needed
- Tested on a staging copy of your WHMCS version
- Full source code, no ionCube encoding
- 30 days of bug fixes after delivery
Not included or billed separately
- WHMCS licence and third-party module licences
- Registrar, panel or payment provider account fees
- Fixing other vendors' encoded (ionCube) modules
- Server hosting for WHMCS
Scale
Ongoing development
From $1,299/ month
A WHMCS developer on your roadmap every month.
Who it's for
Hosting companies with a list of WHMCS modules, integrations and fixes to work through
Delivery
Starts within 2 weeks of sign-off
Monthly
About 80 hours a month of WHMCS development, lead review and a monthly change log
Beyond this
Larger provisioning systems are scoped in writing first.
What you get
- About 80 hours of WHMCS development a month
- New modules, hooks and integrations
- Fixes and WHMCS version upgrades
- Lead-reviewed code in your repository
- Monthly change log
Not included or billed separately
- WHMCS licence and third-party module licences
- Registrar, panel or payment provider account fees
- Fixing other vendors' encoded (ionCube) modules
- Server hosting for WHMCS
How we price this. Price follows the number of API actions, screens, hooks and WHMCS versions the module must support. Large provisioning systems are scoped in writing before work starts.
Spaceship registrar module install and setup is $99. Order form and client-area themes start at $399. Moving WHMCS to a new server starts at $99, and migrating to WHMCS from another billing system starts at $499. Hourly work starts at $35.
Related work
WaseerHost case study
Our own hosting brand's marketing website and WHMCS customer portal.
WordPress, WHMCS, LiteSpeed, CloudLinuxWhat do the WHMCS development plans cost and include?
Setup & fixes is From $149 / project. Done in 1 to 3 working days after you give us access. No monthly fee. Custom module is From $699 / project. Done 2 to 4 weeks after the written scope is signed off. WHMCS care after delivery is optional, $99/month. Ongoing development is From $1,299 / month. About 80 hours a month of WHMCS development, lead review and a monthly change log. Spaceship registrar module install and setup is $99. Price follows the number of API actions, screens, hooks and WHMCS versions the module must support. Not included: WHMCS licence and third-party module licences; registrar, panel or payment provider account fees; fixing other vendors' encoded modules; server hosting for WHMCS.
Do you build WHMCS registrar and provisioning modules?
Yes. We build registrar modules (register, transfer, renew, nameservers, DNS, WHOIS contacts, sync), provisioning modules (create, suspend, unsuspend, terminate, change package, usage) and addon modules with their own admin and client area screens. Our free Spaceship registrar module is a public example of the code you get.
Do I get the source code?
Yes. Modules are delivered as plain PHP with no ionCube encoding, in your repository. You can read, audit and change every line, and you are not tied to us for future changes.
Will the module keep working after a WHMCS update?
We build on the documented WHMCS module, hooks and API interfaces rather than editing WHMCS core files, and we test on a staging copy of the WHMCS version you run. Major WHMCS releases can still change behaviour, so version checks and fixes are part of WHMCS care ($99/month) or quoted when you upgrade.
Can you install the free Spaceship module for us?
Yes. Install and setup is a fixed $99. We upload the module, connect your Spaceship API key, import TLD pricing with the WHMCS sync utility, assign the registrar to your TLDs and test a registration and a nameserver change. The module itself stays free under the MIT licence.
Can you move WHMCS to a new server or migrate us to WHMCS?
Yes. Moving an existing WHMCS install to a new server starts at $99 and covers files, database, cron and email piping. Migrating from another billing system to WHMCS starts at $499, and the final price follows a review of the data you need to bring across.
Ready to start with WHMCS development services? Book a free call
A free 15-minute call, then a written scope and estimate. No obligation, no sales script.