1) SMS Manager
2) Support Pin
3) Affiliates Plus
4) Auto Product Upgrade
5) Email Verification
6) Server Monitoring
7) Client Notifications
8) Phone Verification
9) Credit Manager
10) GDPR Tool

https://www.whmcsservices.com/top10.php

Installing Discount Manager is very simple. The following steps will guide you through the process:

1) Upload the entire folder to your website - if you experience problems, try uploading in binary mode. However, do not upload the “upload” folder, just the files inside of it!
2) Activate the module in WHMCS via the Configuration > System Settings > ADDON MODULES screen. You will see the Discount Manager click activate then click configure to see the options

3) Check Full Administrator box in the Access Control then click save changes
4) You can access your module at 'Addons' → 'Discount Manager' and you can add your discount code.

This on the template that compatible with my modules

Zomex (Latest Version) Click Here
ThemeMetro (Latest Version) Click Here
CMSBased (Latest Version) Click Here
SwiftModders (Latest Version) Click Here
Impressive Themes (Latest Version) Click Here
ThemeLooks (Latest Version) Click Here
Lara, Admin (Latest Version) Click Here

This on the WS Modules Compatible with One Page Checkout

WS SMS Manager
WS Client Username
WS GDPR Tools
WS Email Verification Pro (It work only all page)
WS Phone Verification (It work only if you choose after payment)

Important: Third-party modules, which controls order process pages will NOT be compatible with WS One Page Checkout. This form has been build completely separately from default WHMCS order, and it is NOT based on default WHMCS order process templates

Version: 1.0.3 Released (12/28/2023)
Maintenance

Fixed bugs with PHP 8.1 and WHMCS 8.8.x
Fixed support for ionCube Loader v12 and PHP 8.1
Updated Remove Support for PHP 7.1 to 7.3
Updated included new graphics for 360 Monitoring, Xoni Now, and NordVPN MarketConnect products
Updated WHMCS V8.8 support
Please note that the new WHMCS On-Demand Renewals feature is not yet supported until one of the next new version
Updated Remove Support for WHMCS V8.6.x to 8.7.x

Version: 1.0.2 Released (06/22/2022)
Maintenance

Fixed Problem with product domain adding
Fixed Problem with phone field county
Fixed Cart duplicate domain in WHMCS 8.5.x
Fixed Some problems with the new hosting order
Fixed currency
Fixed issue with PHP 7. x

Version: 1.0.1 Released (10/22/2021)
Maintenance

Fixed Problems with Lagom, Croster, Flattern, Hexa, Control, Flare, ClientX & HostX, and Twenty-One
Fixed Problem with WHMCS V8.3 changes
Fixed Problem with changing domain in search results
Fixed Problem with TOS agreement
Fixed Problem with Stripe's incomplete gateway
Fixed Problem with country field
Fixed Problem with product domain selecting

Version: 1.0.0 Released (04/29/2021)
Stable

New Initial Release

Version: 1.0.0 B1 Released (06/15/2020)
Beta

Beta Release

Here is the following OrderForms that work with this module:

WHMCS
Premium Comparison
Pure Comparison
Standard Cart
Supreme Comparison
Universal Slider

Impressive Themes
Control
Flare
Simplicity

Swift Modders
Allure
SwiftModders Client

Theme Metro
Croster It work only the WHMCS order form (Not with Croster Single Page Checkout or Croster Default)

Zomex
All Themes

WHMCS Global Services
Clientx (Not 100% Sure)
HostX (Not 100% Sure)

We would like to thank our members, whose efforts over the years have made this translation what it is.

Spanish: Rodrigo Martinez
German: Alfred Pogner

Server Monitoring for WHMCS can actively monitor your servers & websites, and alert you by email, SMS and mobile push when they go down. You also get an uptime report you can show on your website.

Ever thought of running your own highly profitable website monitoring and server uptime service just like Hyperspin.com, UptimeRobot, Pingdom.com, and Statuscake.com for an incredible low startup cost?

Well, here's your chance! WHMCS Service's popular software, WS Server Monitoring, is a unique system that allows you to run your own website monitoring service and explore a fairly untouched but lucrative space, which has a potential for many opportunities. More information

Screenshot: Click Here

Sale Price:
Owned License: $59.99 USD Click Here

The next Seven (7) people who purchase this module will get $9.99 Off off the Sales Price. To get this $9.99 discount, you must use this discount code, mon, when you order. If you do not use this discount code when you order you will NOT get the $9.99 off. Please remember to use the discount when you order.

We've partnered with companies that may benefit your business and gained you access to the best discounts and promotions. Check out some of our partners below:

Zomex - https://www.whmcsservices.com/zomex.php
ThemeMetro - https://www.whmcsservices.com/thememetro.php
Website Integrations - https://www.whmcsservices.com/integration.php
Impressive Themes - https://www.whmcsservices.com/impressivethemes.php
SwiftModders - https://www.whmcsservices.com/swiftmodders.php
ThemeLooks – https://www.whmcsservices.com/themelooks.php
LicensePal - https://www.whmcsservices.com/licensepal.php

Installing Support Pin is very simple. The following steps will guide you through the process:

1) Upload the entire folder to your website - if you experience problems, try uploading in binary mode. However, do not upload the “upload” folder, just the files inside of it!
2) Activate the module in WHMCS via the Configuration > System Settings > ADDON MODULES screen. You will see the Support Pin click activate then click configure to see the options

Please note: Do not forget to press Configure and choose the Admin Role Groups who are permitted to have access to the Module.
3) Log in to your WHMCS admin area and edit the administrator role permission settings

There are 3 permissions for support pin, 1. admins can see and check support pins 2. admin can see and check and expire (full permissions) 3. Client Summary PIN

Click Here