NetworkSketch - 2026 Pricing, Features, Reviews & Alternatives

NetworkSketch is a browser-based network topology diagram tool built for network engineers, telecom engineers, MSPs, VARs, and IT consulting firms. Running entirely in any modern desktop browser with no installation required, NetworkSketch processes all diagramming, validation, auto-arrangement, and export operations locally on the user's machine. No diagram data is uploaded to any server, making it suited for environments with strict data-handling requirements.

NetworkSketch supports drag-and-drop placement of a broad device library covering routers, L2/L3 switches, firewalls, wireless APs, controllers, load balancers, SD-WAN edges, VPN gateways, LTE routers, modems/ONTs, ISP circuits, cloud nodes, servers, VMs, storage, endpoints, cameras, and voice gear. Cable links carry typed media attributes including copper, single-mode fiber, multi-mode OM3/OM4, DAC, wireless, WAN circuit, VPN tunnel, SIP trunk, and logical, along with speed, VLAN assignments, and per-end port labels. An automatic color-coded media type key updates as links are added. Container objects represent buildings, MDF/IDF rooms, DMZ segments, VLANs with CIDR and gateway, cloud VPCs, and racks. Per-device fields capture hostname, management IP, vendor/model, OS version, serial number, location, notes, and type-specific attributes. Multi-page documents support physical, logical, and per-site topology pages linked via Page Link shapes within a single file.

NetworkSketch includes a network check that flags duplicate IPs, IPs outside their subnet, reused ports, unlinked devices, duplicate hostnames, invalid IPs/CIDRs, and dead page links before documentation is handed off. One-click auto-arrange produces a top-down layered layout that respects building and VLAN groupings. PDF export (Letter through Tabloid/A3) generates engineering-ready output with a title block, device inventory table, and cabling schedule. PNG and CSV export are also available. Import from SolarWinds Orion is supported via a read-only export script, and device lists can be pasted directly from a spreadsheet. The subscription includes both network diagram and call-flow/IVR diagram tools at no additional cost, with a 7-day free trial requiring no credit card.