SubnetBuddy vs ZenTerm

SubnetBuddy is a fast, offline subnet calculator and network planning tool built for IT professionals, network engineers, students, and anyone studying for their CCNA, CompTIA Network+, or just needs to crunch CIDR notation on the fly. No internet required. No ads. No account needed. Just open the app and start calculating. SUBNET CALCULATOR • Enter any IP address and CIDR prefix (e.g. 192.168.1.0/24) • Instantly see network address, broadcast address, first and last usable host • View total hosts, usable hosts, and wildcard mask • Get the next sequential subnet with one tap • Supports all prefix lengths from /0 to /32 MASK CONVERTER • Convert between CIDR notation, dotted decimal, and binary • Enter a prefix length and see all three formats instantly • Quick-reference for common subnet masks • Perfect for exam prep and on-the-job lookups VLAN PLANNER • Plan multiple VLANs with custom names and sizes • Set a base network and SubnetBuddy calculates non-overlapping subnets for each VLAN • See network range, gateway, CIDR, and host count per VLAN • Great for designing office networks, lab environments, and homework assignments IP VISUALIZER • Enter a CIDR block and see a visual map of the IP address space • Color-coded grid shows used vs. available addresses • Instantly understand how big (or small) your subnet really is • Tap any cell to see the full IP address TERMINAL-STYLE DESIGN • Dark theme with VibeCMD's signature hacker-green aesthetic • Monospace fonts and command-line inspired interface • Clean, distraction-free layout built for speed • Easy on the eyes during late-night study sessions WORKS COMPLETELY OFFLINE • Zero network calls — all calculations happen on-device • No account required — open and use immediately • No data collection — your network plans stay on your phone • Lightning fast — results appear as you type BUILT FOR REAL PEOPLE • IT professionals doing quick subnet math on-site • Students studying for CCNA, Network+, or any networking exam • Homelab enthusiasts planning their network segments • DevOps engineers carving up VPC address spaces • Anyone who's tired of Googling "what is /22 in dotted decimal" SubnetBuddy is a utility tool for network address calculations. It does not connect to or scan any networks.

ZenTerm is a self-hosted terminal client for iPhone and iPad, designed to run AI coding agents on a server you own — no cloud, no middleman, no account. It connects your device directly to your own machine (a Mac at home, a single-board computer, or a Linux VPS), letting you browse, edit, and run commands from anywhere. FEATURES • Full Terminal — A real xterm.js-based shell with tmux multi-window tabs • Multiple Sessions — Run several AI coding agents in parallel and switch between them • iPad Workspace — Landscape support, sidebar navigation, and split panes for side-by-side work • Guided Setup — Start the Gateway, pair by QR code, and configure remote access step by step • Rate Limit Tracking — Monitor your AI agent usage at a glance from Settings • File Browser — Browse, upload, and download files on your server • Dark & Light Themes — A calm Zen Garden visual design HOW IT WORKS Run the open-source ZenTerm Gateway on a computer you own (any Mac, Linux machine, single-board computer, or VPS). Your iPhone or iPad communicates directly with the Gateway over WebSocket. Nothing routes through our servers — your data stays with you. WHO IT'S FOR • Check on your server from anywhere • Operate AI coding agents from your iPhone or iPad • Prefer a self-hosted, open-source solution over a SaaS terminal PRIVACY No account required. No ads. No analytics. No tracking. All data stays on your device and on your server. Gateway source code on GitHub: https://github.com/phni3j9a/zenterm