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SagSwell — Free COMTRADE Viewer Online (IEEE C37.111)

sagswell.com

LaunchIndex first observed SagSwell — Free COMTRADE Viewer Online (IEEE C37.111) (sagswell.com) live on 11 November 2026. View its launch screenshot, category, technologies, and verification evidence.

Visit sagswell.com External site · Last checked November 11, 2026
Screenshot of sagswell.com
Captured November 11, 2026 19:11 as part of the recorded launch evidence.
Observed launch story

A launch record built from evidence.

SagSwell — Free COMTRADE Viewer Online (IEEE C37.111) (sagswell.com) was first observed live on 11 November 2026.

SagSwell is a free online COMTRADE viewer that opens IEEE C37.111 fault records (.cfg, .dat, .cff, .zip) in a browser, showing waveforms, RMS trends, harmonics, and phasors.

Its profile is classified as Saas within Technology / Developer tools. Verification detected Next.js.

Recorded evidence

What the launch signal contained.

First observed live
Previous state
No prior non-live observation
Last verified
Canonical host
sagswell.com
Category
Technology / Developer tools
Website type
Saas
Observed title
SagSwell — Free COMTRADE Viewer Online (IEEE C37.111)
Observed description
Free online COMTRADE viewer. Open IEEE C37.111 fault records (.cfg, .dat, .cff, .zip) in your browser: waveforms, RMS trend, IEEE 1159 sags and swells, harmonics, phasors and ITIC/CBEMA. Nothing to install.
Detected technologies
Next.js
Screenshot captured
Evidence source
Browser observation · Local
Evidence confidence
93%
HTTP status
200
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