Drop in routers, switches, firewalls and access points, cable them with real media types and port labels, group them into buildings, VLANs and racks. It checks your IP plan, lays itself out and exports a PDF with a title block, device inventory and cabling schedule.
A network diagram is a map of how to get into a network: public IPs, firewall placement, management addresses, VLANs, circuit IDs and serial numbers. It shouldn't sit on someone else's server. So the NetworkSketch editor runs entirely in your browser, and we never receive, store or see your diagrams. Not even encrypted. There is simply nothing to breach.
Designing, the network check, auto-arrange and PDF, PNG and CSV export all happen on your machine. There is no cloud copy to leak, subpoena or misconfigure.
Save diagrams as files wherever your security policy requires: your laptop, an encrypted share, your documentation system or a change ticket.
No analytics or tracking scripts. A strict browser policy blocks the page from sending data anywhere else. Your security team can check it in five minutes. Read the details →
What our server knows: your email address, your sign-in sessions and your subscription status. That's all. Optional autosave stays in your own browser, can be switched off, and can be wiped with one click.
A general-purpose drawing program makes you place every shape, nudge every connector and type port numbers into floating text boxes. NetworkSketch already knows what a device, a cable and a VLAN are, so the diagram doubles as documentation you can check.
Routers, L2/L3 switches, firewalls, wireless APs, controllers and bridges, load balancers, SD-WAN edges, VPN gateways, LTE routers, modems/ONTs, ISP circuits, clouds, servers, VMs, storage, endpoints, cameras and voice gear.
Each link has a media type (copper, single-mode or multi-mode fiber, wireless, WAN circuit, VPN tunnel, SIP trunk, logical), speed, VLANs and a port label at each end. Right-angle connectors by default.
Industry-standard cable colors, with a key drawn on the canvas automatically for the media types you actually used.
Drop devices into a Main Building MDF, an IDF, a DMZ, a VLAN with its ID, CIDR and gateway, a cloud VPC or a rack. Move the container and everything inside moves with it.
Hostname, management IP, vendor/model, OS version, serial, location and notes, plus type-specific fields like switch VLANs, AP SSIDs, circuit IDs and SIP trunk DIDs. Hostname, model and serial print beside the icon.
Flags duplicate IPs, IPs outside their subnet, an interface used twice, unlinked devices, duplicate hostnames, invalid IPs or CIDRs and dead page links. Click an issue to jump to it.
A clean top-down layered layout that respects your buildings and VLANs. No more nudging lines around after every change.
Physical on one page, logical/L3 on another, one page per site, all linked with Page Link shapes. Still one file, one PDF.
PDF from Letter to Tabloid/A3 with an engineering title block (address, author, approval, revision date, page X of Y), a device inventory and a cabling schedule. PNG of a page and CSV for spreadsheets.
We're building this with a small group of network, IT and telecom engineers. Testers get full access free, and your feedback shapes what gets built next. Interested? Ask the person who shared this page for an invite.
Every plan starts with a 7-day free trial. No credit card required. Trial exports are watermarked. Prices in USD, plus applicable tax.
Two products, one subscription: every plan also includes CallSketch, our call flow and IVR diagram tool.
Only on your computer. Diagrams are saved as files where you choose, and optionally auto-saved in your own browser so an accidentally closed tab doesn't lose work. You can turn that off and clear it at any time. Our servers never receive them.
That's what it was designed for. Everything you type into a diagram is processed in your browser and never transmitted to us, and a strict Content Security Policy stops the page from sending data anywhere else. Treat the saved files like any other sensitive network documentation. How it's enforced.
Your email address, your sign-in sessions and your subscription status. Payments are handled by Stripe; we never see your card number. Full details.
It's vendor-neutral. Icons are generic, and each device has fields for vendor, model, OS version and serial, so you can document any mix of hardware in the same diagram.
No. Each subscription is for one person and can be signed in on one device at a time; signing in somewhere else signs out the previous device. Team plans are coming soon.
CallSketch: call flow and IVR diagrams for phone systems and contact centers.