Announcing my new Tools Hub

A curated collection of developer and cloud utilities

Tools Hub Homepage Screenshot of the Tools Hub landing page

I am excited to announce the launch of my new Tools Hub!

The Inspiration

When I first started my career, I began with CCNA training. Networks were what got me into systems engineering and then later on DevOps and Platform Engineering. Over the years one thing became clear very quickly: every platform project starts with network planning. I find myself over and over using visual subnet calculators available online.

Whether you are building a small on-premise setup or a massive cloud architecture, you inevitably deal with subnets, IP ranges, and CIDR blocks. And it’s not just a one-time task. Every now and then, we still need to go back to subnet planning whether it’s for modifying existing networks, adding new subnets, or carving out space for a new service.

That recurring need is what drove me to build these tools. I wanted a reliable, easy to use set of utilities that I could use myself to streamline these tasks.

The Tools Hub

The Tools Hub is a Single Page Application (SPA) designed to be fast and helpful. It currently features:

Cloud Subnet Calculator

Calculate and visualize subnet divisions for cloud environments. Supports AWS, Azure, and GCP.

Screenshot of the Cloud Subnet Calculator tool showing a subnet breakdown
Cloud Subnet Calculator

Azure VNet Designer

Design multi-VNet hub-and-spoke topologies across Azure regions. Export to Terraform and Bicep.

Screenshot of the Azure VNet Designer tool showing a hub and spoke topology
Azure VNet Designer

I’ve built these tools because they are what I use, and I hope they will be just as useful to you in your daily work.

Check it out at https://tools.mertsenel.tech/

Mert Senel
Mert Senel
Principal Platform Engineer - Microsoft Certified Azure Solutions Architect, Azure Administrator & DevOps Expert