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Isothrum vs APIGit

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Isothrum compared with APIGit
DetailIsothrum logo IsothrumAPIGit logo APIGit
What it doesA GNS3-style editor for containers, VMs, switches and routers that runs in your browser Git-native platform for building, publishing, sharing, and securing APIs
StageNot given Not given
Founded2022 2022
Based inFR US
Pricing modelFree Freemium
PricingNot given Free: $0 (1 seat, 1 API repository, 1 published document with badge, 1 mock server, up to 1,000 mock calls/month). Team: $216/year (3 seats included, $72 per additional seat; unlimited repositories, documents, mock servers, 20,000 mock calls/month). Enterprise: $720/year (5 seats included, $144 per
Key features
  • 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
  • Git-native repository for API specifications
  • Visual OpenAPI editor with live linting
  • API documentation generation and publishing
  • API governance with predefined and custom rule sets
  • Spec-based and code-based mock servers
  • Team collaboration with organizations and permissions
  • CLI for linting, bundling, and publishing
  • MCP server and llms.txt for AI agent integration
  • GitHub Actions integration without stored secrets
  • Branch and tag protection with push mirrors and webhooks
What makes it different
  • Runs in your browser with no installation or account required
  • Exports to multiple environments from one lab design
  • Private by design with no data leaving your browser
  • Open isoloom.yml format that you own and can version control
  • Can import and convert existing GNS3 projects
  • Every API spec lives in a real Git repository with full version history, review workflow, and blame tracking instead of in a portal
  • Open formats with no lock-in: OpenAPI and Markdown in Git, same checks run in CLI and CI
  • Quality control through review: governance rule sets run in the editor and again in pull requests before reaching consumers
  • CLI is free with MIT license, sends no telemetry, and works offline for linting, scoring and bundling
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)2 no change since last check36 no change since last check
Trust Flow (Majestic)011
Citation Flow (Majestic)020
Referring domains (Majestic)016

6 details filled in for both companies.

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