Ultimate Multisite – WordPress Multisite SaaS & WaaS Platform

Ultimate Multisite is a WordPress Multisite plugin designed to help you build, sell, and manage a Website-as-a-Service (WaaS) platform on your own infrastructure.

With Ultimate Multisite, you can create subscription plans, provision new sites from templates, map custom domains, and manage customers across your WordPress Multisite network — all from one integrated system built specifically for Multisite.

Launch niche site builders, productized services, franchise networks, or internal platforms without stitching together dozens of plugins. From checkout to provisioning to ongoing management, Ultimate Multisite provides the core building blocks for running a modern, scalable WordPress multisite platform.

Formerly known as WP Ultimo, Ultimate Multisite is now community-maintained and actively improved.

Also Known As

Ultimate Multisite is commonly searched for as:

• Ultimate Multisite plugin
• Ultimate Multisite WordPress
• Multisite Ultimate
• WP Ultimo

If you are looking for WP Ultimo, this is the community-maintained successor.

Key Features

Everything you need to build and scale a WordPress Multisite SaaS platform:

• Fast Site Creation – Self-serve signup that provisions new sites instantly from templates
• Domain Mapping – Custom domains with automated DNS verification and guided setup
• Payments & Subscriptions – Stripe and PayPal support for recurring plans and one-time fees
• Flexible Plans & Limits – Package features and enforce quotas across your multisite network
• Template Library – High-converting site templates customers can launch in minutes
• Customer Dashboard – Branded UI for managing billing, sites, domains, and settings
• White-Label Ready – Rename, rebrand, and customize the experience
• Hosting Integrations – Cloudflare, GridPane, Cloudways, WPMU DEV, and more
• Developer-Friendly – Hooks, filters, and an extensible add-on system

Who Is Ultimate Multisite For?

• Agencies productizing WordPress into recurring plans
• Creators launching niche or industry-specific site builders
• Hosts and MSPs offering white-label WordPress platforms
• Franchises and multi-location brands managing many similar sites
• Universities and organizations provisioning sites at scale
• Internal teams deploying microsites and campaigns

Popular Use Cases

• Productized website services with recurring billing
• Franchise and multi-location networks with brand-consistent sites
• Industry-specific “site builder” platforms
• Private networks for events, departments, or communities
• Educational institutions provisioning program or class sites

Why Choose Ultimate Multisite

• Built for WordPress Multisite – Not retrofitted from single-site assumptions
• Open & Community-Maintained – Transparent development and frequent updates
• Proven Architecture – Templates, plans, and domain mapping built-in
• Extensible by Design – Add-ons, actions, filters, and hosting integrations
• You Own the Stack – No forced SaaS lock-in or proprietary hosting

If you searched for “Ultimate Multisite” on the WordPress plugin directory, this plugin provides the full multisite SaaS and WaaS functionality you are looking for.

Get Started in Minutes

1. Enable WordPress Multisite on a staging or production site
2. Install and Network Activate Ultimate Multisite
3. Run the setup wizard and create your first plan and template
4. Share your signup page and start provisioning sites

Documentation

1. Ultimate Multisite Getting Started Guide
2. Full Ultimate Multisite Documentation

Requirements

• WordPress Multisite 5.3 or higher
• PHP 7.4.30 or higher
• MySQL 5.6 or higher

Support

For support, please open an issue on the GitHub repository.

External Services

This plugin connects to external services to provide optional functionality. All services are disclosed during setup and can be enabled or disabled as needed.

Geolocation Services

MaxMind GeoLite2
– Downloads a geolocation database (no personal data sent)
– Used only when geolocation features are enabled
– https://www.maxmind.com/en/privacy-policy

IP Lookup APIs
– Used to determine public IP address (no data stored)
– Services include IPify, IPinfo.io, IP-API, and others

Plugin Updates and Add-ons

Ultimate Multisite Update Server
– Sends site URL, plugin version, and license metadata
– Used for plugin and add-on updates
– https://ultimatemultisite.com/privacy-policy/

Payment Processing

Stripe
– Processes card payments and subscriptions
– When using the Stripe integration, a 3% fee per-transaction is applied to support ongoing development. This fee is waived for sites that have purchased any addon from ultimatemultisite.com. The fee is collected by Stripe as part of the payment and does not affect the amount charged to your customers.
– https://stripe.com/privacy

PayPal
– Processes PayPal payments
– https://www.paypal.com/us/legalhub/privacy-full

Hosting Integrations

Integrations may send site configuration data and API credentials only when explicitly enabled.

Supported providers include:
– Cloudflare
– Closte
– Cloudways
– GridPane
– WPMU DEV

Usage Tracking (Opt-In)

Anonymous telemetry is disabled by default and requires explicit opt-in.

Data collected includes:
– WordPress and PHP versions
– Plugin version and enabled add-ons
– Anonymized usage ranges

No personal data, domains, IP addresses, or payment information are collected.

1. 

   Ultimate Multisite settings pages.

2. 

   Creating products and subscription plans.

3. 

   Managing sites across the multisite network.

4. 

   Registration and checkout form builder.

Version [2.4.12] – Released on 2026-02-27
– New: Send Invoice and Resend Invoice workflows for payments.
– New: Standalone “Pay Invoice” checkout form for invoice payments without a membership.
– New: Payment Methods element displaying current card info and change payment method flow via Stripe Billing Portal.
– New: System events for invoice sent, recurring payment failure, and membership expired with email notifications.
– New: Checkout form debug autofill button when WP_ULTIMO_DEBUG is enabled.
– New: Domain meta table for storing metadata on domain records.
– New: Extensibility hooks on domain mapping widget and domain list table.
– New: Node Management capability interface for hosting integrations.
– Fix: Password strength validation no longer blocks checkout when the meter element is absent.
– Fix: %2F being stripped from SSO redirect URLs breaking some WooCommerce URLs.
– Fix: Stripe Checkout gateway updated to current API — uses price_data format, proper subscription/payment mode, and skips zero-amount items.
– Fix: Removed deprecated Stripe API version pin and product type parameter.
– Fix: Membership cancellation now properly cancels the gateway subscription before the local membership.
– Fix: Payments no longer require a membership, enabling standalone invoices.
– Fix: Cart no longer overrides duration for products with independent billing cycles.
– Fix: Network installer correctly sets core multisite table names.
– Fix: Admin page save handlers now return proper bool values.
– Improved: “Change Payment Method” replaces the destructive “Cancel Payment Method” flow.
– Improved: Integration wizard API key fields use password input type to prevent browser autofill.
– Improved: Integration wizard shows error state on test failure and improved navigation.
– Improved: Addon settings grouped under dedicated admin bar submenu.
– Improved: Select2 multi-select preserves saved option ordering.
– Improved: PayPal fires payment_failed event on IPN failures.
– New: Addon compatibility headers (UM requires at least) with network admin version mismatch notices.
– New: wu_get_checkout_form_by_slug filter for addon-registered virtual checkout forms.
– New: Cart filters wu_cart_show_no_changes_error and wu_cart_addon_include_existing_plan for addon checkout flows.
– New: wu-register-domain added to checkout element slug list for addon checkout pages.
– Fix: AJAX search_models not passing query parameters to model functions.
– Fix: Template validation failing when an addon product is selected at checkout.
– Fix: New subdomain sites created with http:// instead of https:// causing infinite redirects.
– Fix: mPDF PSR-log aware trait patch applied to wrong file on some Composer versions.
– Improved: Default minimum password strength lowered from “strong” to “medium” for better usability.
– Improved: Dashboard first-steps widget shows contextual action labels for completed steps.

Version [2.4.11] – Released on 2026-02-16
– New: Settings API for remote settings management.
– New: Pay-What-You-Want (PWYW) pricing with per-product custom amounts and recurring options.
– New: Billing-period controls for discount codes and membership creation.
– New: Better error page for customers and admins.
– New: Stripe Connect via secure proxy server — platform credentials no longer distributed in plugin code.
– New: Stripe Checkout Element with automatic billing address handling and removal of application fees.
– New: Multisite Setup Wizard — guides single-site installs through enabling and configuring WordPress Multisite.
– New: Modular hosting integration system with encrypted credential storage.
– New: Form field normalization CSS for consistent checkout and login styling across all themes and page builders.
– Fix: Password strength setting not being applied during checkout.
– Fix: Encoded characters stripped from URLs during SSO and domain mapping redirects.
– Fix: Inline login prompt stability and missing validation for existing emails at checkout.
– Fix: Site title field error caused by third-party plugin conflicts.
– Fix: URL replacement failing for Elementor content on subdirectory multisite installs.
– Fix: Country and state selection issues in checkout.
– Fix: Duplicate Country/ZIP fields appearing on Stripe checkout.
– Fix: Invoice PDF download failing with expired nonce.
– Fix: Settings page crash on PHP 8.4.
– Fix: Single-site compatibility issues and dashboard widget setup status detection.
– Fix: Rewrite rules now flushed when signup pages are created or modified.
– Improved: Admin pages no longer loaded on frontend and cron requests for better performance.
– Improved: Security hardening for input validation, credential storage, and cart processing.
– Improved: Expanded automated test coverage across checkout, payments, and admin functionality.

Version [2.4.10] – Released on 2026-01-23
– New: Configurable minimum password strength setting with Medium, Strong, and Super Strong options.
– New: Super Strong password requirements include 12+ characters, uppercase, lowercase, numbers, and special characters – compatible with WPMU DEV Defender Pro rules.
– New: Real-time password requirement hints during checkout with translatable strings.
– New: Themed password field styling with visibility toggle and color fallbacks for page builders (Elementor, Kadence, Beaver Builder).
– New: Opt-in anonymous usage tracking to help improve the plugin.
– New: Rating reminder notice after 30 days of installation.
– New: WooCommerce Subscriptions compatibility layer for site duplication.
– Improved: JSON response handling for pending site creation in non-FastCGI environments.

Version [2.4.9] – Released on 2025-12-23
– New: Inline login prompt at checkout for existing users – returning customers can sign in directly without leaving the checkout flow.
– New: GitHub Actions workflow for PR builds with WordPress Playground testing – enables one-click browser-based testing of pull requests.
– Fixed: Template switching now preserves images – URLs in post content are correctly updated when switching templates.
– Fixed: Email manager initialization during setup wizard – system emails are now correctly created.
– Fixed: Template switching permission and capability checks improved with better error messaging.
– Fixed: Multiple primary domains being set.
– Improved: Template selection logic with better null safety and smart fallbacks for pre-selected templates.
– Improved: Compatibility for legacy filter wu_create_site_meta from WP Ultimo v1.
– Improved: Added support for Runcloud V3 API

Version [2.4.8] – Released on 2025-11-21
– New: Added MCP (Model Context Protocol) Server integration.
– New: Added support for multi-network installations with network-specific customers, memberships, and products.
– New: Added magic login links for SSO when third-party cookies are disabled.
– New: Added admin notice when invalid COOKIE_DOMAIN constant is detected.
– Fixed: WooCommerce subscriptions incorrectly set to staging mode when site is duplicated.
– Fixed: Single-Sign-On (SSO) authentication issues with custom domains.
– Fixed: Template switching functionality and improved singleton pattern usage across codebase.
– Improved: Enhanced domain mapping element and login form handling.
– Improved: Better redirect handling for sites within the network.
– Improved: Faster site creation after checkout.

Version [2.4.7] – Released on 2025-10-31
– Fixed: Conflict with YesCookie plugin.
– Improved: Thumbnail image quality on template selection in the checkout.
– Fixed: Redirect from secondary domains to primary domain.
– Fixed: Choosing templates for checkout form builder.
– Fixed: Extra domain creation with subdirectory installation.
– Improved: Allow html in custom domain instructions.

Version [2.4.6] – Released on 2025-10-15
– Fixed: Toggle switches in RTL languages.
– Fixed: Rendering admin pages for legacy addons.
– Fixed: Some Stripe API errors.
– Improved: Better site URL autogeneration and added preview option.
– Fixed: Escaping too much HTML.
– Fixed: Saving HTML in credits field.
– Improved: Type safety in code.
– Fixed: Downgrading during a trial extending the trial period.

Version [2.4.5] – Released on 2025-09-30
– Fixed: Custom domain check when downgrading.
– Fixed: Bug in Action Scheduler.
– Fixed: Hosting integration wizard freezing during setup.
– Improved: More robust handling for login URL obfuscation when 404 template unavailable.
– Improved: Better error messaging for installer with sanitized HTML display.
– Added: Recommended plugins installer functionality.
– Added: New end-to-end testing framework.
– Added: Option to include a “Powered by…” message in the footer of customer sites.
– Added: Install recommended “user-switching” plugin during setup wizard.
– Improved: Autogeneration of site urls and usernames to be more human friendly.
– Improved: Code style and return type consistency across codebase.

Version [2.4.4] – Released on 2025-09-17
– Fixed: Saving email templates without stripping html
– New: Option to allow site owners to edit users on their site
– Fixed: Invoices not loading when logo is not set
– Fixed: Verify DNS settings when using a reverse proxy
– Improved: Lazy load limitations for better performance and compatibility
– New: Add Admin Notice if sunrise.php is not setup
– New: Option to not always create www. subdomains with hosting integrations
– Improved: Plugin renamed to Ultimate Multisite

Version [2.4.3] – Released on 2025-08-15
– Fixed: Bug in Slim SEO plugin
– New: Addon Marketplace
– Fixed: Custom logo not showing on emails and invoices
– Fixed: Limitations failing to load

Version [2.4.2] – Released on 2025-08-07
– Fixed: Authentication of the API
– Fixed: Saving checkout fields
– Fixed: Creating Products and Sites
– Fixed: Duplicating sites
– Improved: Performance of switch_blog
– Improved: Remove extra queries related update_meta_data hook and 1.X compat
– New: Addon Marketplace
– Improved: Update currencies to support all supported by Stripe
– Improved: Template previewer

Version [2.4.1] – Released on 2025-07-17
– Improved: Update Stripe PHP Library to latest version
– Improved: Update JS libs
– Fixed: Fatal error that may occur when upgrading from old name.
– Improved: Added check for custom domain count when downgrading.

Version [2.4.0] – Released on 2025-07-07
– Improved: Prep Plugin for release on WordPress.org
– Improved: Update translation text domain
– Fixed: Escape everything that should be escaped.
– Fixed: Add nonce checks where needed.
– Fixed: Sanitize all inputs.
– Improved: Apply Code style changes across the codebase.
– Fixed: Many deprecation notices.
– Improved: Load order of many filters.
– Improved: Add Proper Build script
– Improved: Use emojii flags
– Fixed: i18n deprecation notice for translating too early
– Improved: Put all scripts in footer and load async
– Improved: Add discounts to thank you page
– Improved: Prevent downgrading a plan if the post type would be over the limit
– Fixed: Styles on thank you page of legacy checkout

Version [2.3.4] – Released on 2024-01-31
– Fixed: Unable to check out with any payment gateway
– Fixed: Warning Undefined global variable $pagenow

Version [2.3.3] – Released on 2024-01-29

• Improved: Plugin renamed to Multisite Ultimate
• Removed: Enforcement of paid license
• Fixed: Incompatibilities with WordPress 6.7 and i18n timing
• Improved: Reduced plugin size by removing many unnecessary files and shrinking images

For the complete changelog history, visit: https://github.com/superdav42/multisite-ultimate/releases