01 — Problem
Network diagrams should not have to be redrawn by hand.
Port mappings live in spreadsheets. Device details live in separate files. Small changes require diagram rework, over and over.
Sample Topology
Tier 1 — Firewalls
fw01fw02
Tier 2 — Core (VSS)
core01core02
Tier 3 — Servers
server01server02server03server04
How it works
Define devices → Complete the connection mapping → Validate and generate the diagram.
1
Define
Add network devices, assign tiers, and define logical pairs. The sample topology includes firewalls, core switches, and servers.
fw01 · Checkpoint FW · Tier 1
fw02 · Checkpoint FW · Tier 1
core01 · Cisco C9500 · Tier 2 · VSS
core02 · Cisco C9500 · Tier 2 · VSS
server01 · Dell Server · Tier 3
...2
Map
Complete the Excel workbook with port-to-port connections. Dropdowns pre-populate valid port names, media types, and speeds.
src_device src_port dest dest_port media speed
fw01 eth1-3 core01 Twe1/1/5 LC-MM 10G
core01 Twe1/1/1 core02 Twe1/1/1 LACP —
core01 Twe1/1/2 core02 Twe1/1/2 LACP —Generated from device definitionsSource port options are pre-populated based on the device model.
3
Validate + Generate
Upload the completed workbook. Validation checks for missing destinations, invalid ports, duplicate usage, and unsupported media types.
0 blocking errors · Diagram ready8 devices · 18 connections · 4 port channels
Example issue caught:Port eth1-7 on fw01 references a non-existent destination port on core02.
Fixed: corrected to Twe1/1/7, re-uploaded, validation passed.
Fixed: corrected to Twe1/1/7, re-uploaded, validation passed.
Generate your first network diagram.
Start with a guided topology, generate the connection workbook, complete the mapping, and create an editable draw.io diagram.
Up to 8 devicesUp to 3 tiersReal workbook generationReal validationEditable draw.io exportNo credit card required
Simple, honest pricing
Start with the real workflow. Upgrade when you need production scale.
Evaluate
Free
Real workflow for small topology evaluation. No credit card required.
- Up to 8 devices per topology
- Up to 3 tiers
- Workbook generation
- Schema validation
- draw.io export
Plus
US$19 / month
For individuals and teams who need production-scale topology support.
- Unlimited devices and tiers
- Everything in Evaluate
- Reusable projects and models
- Priority commercial support
- Production use rights
Frequently asked questions
Quick answers. More detail on the demo walkthrough.
Unravlr generates draw.io-compatible network diagrams from structured Excel workbooks. Given the same input data, you get the same output every time — no manual layout required.
Yes. The generated .drawio file opens directly in draw.io or diagrams.net and can be edited, annotated, and exported to PNG or SVG after download.
No. Unravlr is a schema-first workflow. Layout is computed deterministically from tier structure and port definitions — not from any heuristic or AI model that could vary between runs.
Validation catches common issues — missing destination devices, invalid port names, unsupported media types, incomplete port channels. You get an annotated workbook back with the specific issues marked for correction.
Uploaded Excel files are processed to generate the diagram and are not retained beyond that request. Generated diagrams are returned directly to your browser.
The evaluation tier supports topologies with up to 8 devices and 3 tiers. You get the real workflow — workbook generation, validation, and diagram export — within those limits.
Not in this MVP. The current product is focused on the hosted workflow and deterministic diagram generation experience.