Dev Log - Week 3: Spanish Electronic Invoicing

9 october 2025

This week I took a slightly unexpected turn from my original roadmap. My plan was to keep working on the full refactor of all three new modules using my new architecture, but I decided to temporarily shift focus to something different - Spanish electronic invoicing. Even though in my first Dev Log I explicitly said that I wasn't going to work on a...

By Davide Mantenuto

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Dev Log - Week 2: Database Consistency, MVC, Dynamic Form System

5 october 2025

This week's work has been dense, technical, and foundational. My focus has been on three major pillars that are now shaping the internal structure of the new module: data consistency, a custom MVC engine and a fully dynamic Form system. Enforcing Data Integrity: Constraints and Triggers A significant portion of this week's effort has gone into im...

By Davide Mantenuto

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Dev Log - Week 1: Laying the Foundations

28 september 2025

This week I started a major refactoring effort across my three WHMCS modules: Billing Extension, Commission Manager and Mercury. At the moment, I'm also considering the possibility of merging all three into a single, unified product, simply called Katamaze. This is still just an idea, not a final decision, but it's a direction I'm seriously explo...

By Davide Mantenuto

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Avoid WHMCS, Blesta, HostBill, ClientExec, Ubersmith Hosting

18 august 2022

At 20, I had just started my first company. One year later I was already using WHMCS that has always been there as a constant in my working life. I have involved myself in different projects ranging from hosting, web development, system administration to blockchain, billing, consulting, logistic and marketplaces. Everything I did was more or less ...

By Davide Mantenuto

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SEO and WHMCS • How we Increased Traffic Rankings by 462%

18 july 2021

Where it all started Let me show you how I managed to boost traffic and other metrics with SEO on this WHMCS site. I didn't hire an SEO expert. I did a lot of research and A/B testing myself as I was creating a SEO module for WHMCS. This gave me the opportunity to test SEO techniques in a real case scenario for an extensive period of time. As I w...

By Davide Mantenuto

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