Subnet Ninja
Free IPv4. Pro: AWS/Azure/GCP + CIDR split + overlap.
Subnet Ninja launched on February 12, 2026 with 4 votes, #2,349 of 16,627 launches that month and more than 75% of that year's launches.
What it does
Subnet Ninja is a terminal-style subnet calculator for Windows. Free: fast on‑prem IPv4 subnet math. Pro: AWS/Azure/GCP reserved‑IP aware modes, a CIDR split tree, and CIDR overlap checks.
Subnet Ninja - Terminal-style IPv4 Subnet Calculator for Windows. Cloud reserved-IP modes, CIDR tree, and CIDR overlap detection.
Terminal-style IPv4 Subnet Calculator for Cloud & Network Engineers. STATUS: LAUNCH SALE See Microsoft Store for pricing in yourfrom engawa-dev.github.io
Does a similar job
all alternatives →
Simple Subnet Network Tool2016 · subnet.im · ▲26Free subnet calculator for IPv4 and IPv6. Get the network address, broadcast, mask, wildcard and usable host range instantly. CIDR cheat sheet included.
IP Guide – Info on IP addresses, Networks, and ASNs2023 · ip.guide · ▲363Hey all, wanted to share my recent weekend hack project. I wanted to improve upon the existing space for looking up information about IP addresses and ASNs. The backend is written in Rust and pulls BGP data every 8 hours from the RIPE RIS project to build up a routing table and also adds geolocation information. The frontend is using React and Tailwind. Would love any feedback or suggestions on what to improve.
I built a macOS tool for network engineers – it's called NetViewsFeb 2026 · netviews.app · ▲243Hi HN — I’m the developer of NetViews, a macOS utility I built because I wanted better visibility into what was actually happening on my wired and wireless networks. I live in the CLI, but for discovery and ongoing monitoring, I kept bouncing between tools, terminals, and mental context switches. I wanted something faster and more visual, without losing technical depth — so I built a GUI that brings my favorite diagnostics together in one place. About three months ago, I shared an early version here and got a ton of great feedback. I listened: a new name (it was PingStalker), a longer trial,…
Interactive IP/CIDR range visualizer2015 · cidr.xyz · ▲6Instantly compute and visualize CIDR subnets, IP ranges and masks. Free online tool for accurate network design, planning and IT education.
PingStalker – A macOS tool for network engineersNov 2025 · pingstalker.com · ▲77Hi HN - I’m the developer of PingStalker, a macOS utility I built to see what’s really happening on the LAN/WLAN. I live in the CLI, but when it came to discovery and monitoring, I found it limiting. So I built a GUI that brings my favorite tools together in one place. PingStalker started because I wanted to know if something on the network was scanning my machine. I also wanted quick access to core details—external IP, Wi-Fi data, and local topology. Then I wanted more: fast, reliable scans using ARP tables and ICMP. As a Wi-Fi engineer, I couldn’t stop there. I kept adding ways to…
ipscrub, an IP address anonymizer for Nginx2018 · github.com · ▲42IP address anonymizer module for nginx. Contribute to masonicboom/ipscrub development by creating an account on GitHub.
More dev tools this month
the category →

open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.
Dev tools · 28d ago · github.com

Contribute to reladraw/reladraw development by creating an account on GitHub.
Dev tools · 26d ago · github.com
OpenBot▲362Grok Bot alternative: free, local, open-source, multiplayer
Dev tools · 23d ago · openbot.run
Talanoa▲346Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…
Dev tools · 21d ago · talanoa.email
CoreSpeed▲332One MCP for everything your agents need: apps, memory, tools
Dev tools · 28d ago · corespeed.io
Source: Product Hunt launch ↗
Launched alongside, February 2026
the whole month →



Lovon AI Therapy▲801Feel closer and have more fun with your partner every day!
AI · Feb 2026 · lovon.app

Hello my name is Ben Ward for the past 3 years I have been remastering the financial game Wall Street Raider created by Michael Jenkins originally on DOS in 1986. It has been a rough journey but I finally see the light at the end of the tunnel. I just recently redid the website and thought maybe the full story of how this project came to be would interest you all. Thank you for reading.
Work · Feb 2026 · wallstreetraider.com