CurlyJSON vs Isothrum
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
CurlyJSON compared with Isothrum
| Detail | 
CurlyJSON | 
Isothrum |
|---|
| What it does | JSON Formatter & Validator — Free, Private & Offline
| A GNS3-style editor for containers, VMs, switches and routers that runs in your browser
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| Stage | Not given
| Not given
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| Founded | Not given
| 2022
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| Based in | Not given
| FR
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| Pricing model | Freemium
| Free
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| Pricing | Free for all tools. Pro: $29.99 per year or $4 per month, plus tax.
| Not given
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| Key features | - Validate JSON with precise line and column errors
- Repair invalid JSON fixing trailing commas, quotes, and comments
- Preserve large integers without rounding
- Detect and mask API keys, tokens and passwords
| - 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
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| What makes it different | - Keeps large numbers exactly as written instead of silently rounding them like most online formatters
- All free tools run entirely in your browser, working offline without uploading data
- Automatically detects and warns about secrets like API keys and passwords
| - 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
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| Free plan | Not given
| Not given
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| Open source | Not given
| Not given
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| Platforms | Not given
| Not given
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| Public API | Not given
| Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | Not checked yet ● no change since last check | 2 ● no change since last check |
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| Trust Flow (Majestic) | 7 | 0 |
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| Citation Flow (Majestic) | 13 | 0 |
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| Referring domains (Majestic) | 2 | 0 |
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4 details filled in for both companies.
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