Fact sheet · Developer Tools
Isothrum
A GNS3-style editor for containers, VMs, switches and routers that runs in your browser
Visual network lab editor for containers and VMs that exports to Docker, Vagrant, Proxmox and cloud platforms. Free to use in your browser with no sign-up.
Overview
Isothrum is a web-based network lab editor where you draw network topologies visually and generate ready-to-run configuration files. The editor runs entirely in your browser using WebAssembly, with no installation or account required. Your designs are saved locally and never uploaded.
You can create labs mixing Docker containers and virtual machines, configure switches with VLANs, routers with FRRouting or Cisco IOS, and apply realistic network conditions like latency and packet loss. The tool exports to multiple environments: Docker Compose, Vagrant, Proxmox, Kubernetes, and major cloud platforms including AWS, Azure, Google Cloud, DigitalOcean, Linode, and Oracle Cloud.
Isothrum includes a desktop application for Windows, macOS and Linux that runs labs locally with Docker or Vagrant, providing consoles, VNC screens, packet capture to Wireshark, and live status monitoring. You can import existing GNS3 projects, and labs are stored as isoloom.yml files—open YAML specifications that can be versioned in Git and run via command line.
Feature facts
- Visual lab editor with drag-and-drop interface for network devices
- Mix containers and VMs in the same lab
- Configure switches with VLANs and trunks
- Automatic or manual routing between networks
- Add network conditions like latency, jitter and packet loss
- Export to Docker Compose, Vagrant, Proxmox, Kubernetes and cloud platforms
- Import GNS3 projects and convert them to labs
- Real-time validation as you design
- Desktop app with consoles, VNC screens and packet capture
- Works offline and runs entirely in the browser
Pricing
Pricing model: Free
Follow Isothrum: their milestones, new launches and awards come to you by email, once a day by default.
Isothrum specifications
| Section | Developer Tools |
|---|---|
| Founded | 2022 |
| Origin | Paris, France |
| Website | isothrum.com |
| Makers | Florian Amette (Founder) |
| Votes2 | 0 |
Isothrum metrics
| Metric | Value |
|---|---|
| Domain Rating | 2 no change since last check |
| Trust Flow | 0 no change since last check |
| Citation Flow | 0 no change since last check |
| Referring domains | 0 no change since last check |
| External backlinks | 0 no change since last check |
Fact: Ahrefs Domain Rating checked 12 Nov 2026, fact changed 7 Nov 2026. Fact: Majestic checked 7 Nov 2026, fact changed 7 Nov 2026. Link facts from Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.
Isothrum domain fact sheet
Open the fact sheet
| Domain age | 1 month |
|---|---|
| Registered | |
| Expires | |
| Registrar | Name.com, Inc. |
| DNSSEC | Not signed |
Isothrum launch receipt sheet
What we have measured for Isothrum since it went live on SaaS Directory Info on 7 November 2026.
- 2 Domain Rating (Ahrefs) no change since launch
at launch: 2 (7 Nov 2026); latest: 11 Nov 2026 - 0 Trust Flow (Majestic)
first measured 7 Nov 2026 - 0 Referring domains (Majestic)
first measured 7 Nov 2026
Day 5 since launch. Next receipt: day 30, 7 Dec 2026. The figures report a change; they do not say what caused it, and many things can. No figure here is a guess.
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Frequently looked up
- Q1Is Isothrum free?
- Yes. The editor runs in your browser with no account and no sign-up required.
- Q2Does my lab leave my browser?
- No. The engine runs in your browser as WebAssembly and your drawing is saved in your browser's local storage. The site only counts anonymous page views.
- Q3Can I use Cisco or other vendor images?
- Yes, with your own images: Cisco IOL, IOSv, CSR 1000v and Catalyst 8000v, and Dynamips 7200 routers. Open routers such as FRRouting work out of the box.
- Q4Can I open a GNS3 project?
- Yes. Open a .gns3 file from the menu: switches become LANs, Docker nodes keep their image, QEMU and VirtualBox nodes become VMs, and Cisco routers become routers.
- Q5Is there a desktop app?
- Yes. The Isothrum desktop app runs your lab on your computer with Docker or Vagrant, with consoles, VNC screens, packet capture into Wireshark and live status. It is available for Windows, macOS and Linux.
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Isothrum has a free listing. The owner can unlock the full profile with a paid launch for $5:
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See also
| Product | Origin | DR1 | Votes2 |
|---|---|---|---|
| liquid-technologiesXML code generator for C# and Visual Basic .Net that creates strongly typed object models from XML schemas | United Kingdom | 70 | 0 votes. Log in to vote for liquid-technologies in the file |
 APIGitGit-native platform for building, publishing, sharing, and securing APIs | United States | 36 | 0 votes. Log in to vote for APIGit in the file |
 eryxWebAssembly sandbox for running untrusted Python safely | not stated | 0 | 0 votes. Log in to vote for eryx in the file |
 TestFlows MachineRun your programs deterministically. Record, replay, and branch your runs. | not stated | 2 | 0 votes. Log in to vote for TestFlows Machine in the file |