cohort.com

Cohort.com

Graphics and statistics software for scientists and engineers: CoPlot (for publication quality 2D and 3D graphs, maps, and technical drawings), CoStat (for statistical analysis), and CoCalc (a free RPN scientific calculator).

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Authority

50/100

Safety

90/100

Registered

Apr 14, 1996

30 years old · GoDaddy.com, LLC

1 of 2 safety checks passed (Sep 10, 2026).

AboutUs has not vetted this site. 1 of 2 automated safety check did not pass. Everything below is what we could measure automatically. Anything you do on the site — paying, sharing personal details, downloading — is between you and the site, not AboutUs.

Current facts

What AboutUs observed on the live site and in WHOIS/DNS today. These are measurements, not an endorsement of the site.

checked now

Domain registered Apr 14, 1996 — 30 years old.

checked now

Registrar today: GoDaddy.com, LLC — unchanged since AboutUs began tracking (Sep 10, 2026).

Trust record

Authority & Safety, with the evidence

How this is scored →

Authority 50/100 — ahead of 50% of scored sitesClear

Why this authority score

Prominence (Open PageRank 1.2/10)+4
Verified continuity: 30.4 years (RDAP registration)+11
Security & email hygiene+4
Calibration adjustment (published map)+8

Every point maps to a sentence. These lines sum to the model score of 27/99, which is what places this site at 50/100 against every other scored site.

Safety evidence

All checked sources came back clean

Site history

Dated record — historical facts always carry their date.

1996
Domain registered (Apr 14, 1996).
2026
Checked today — 1 of 2 safety checks passed (Sep 10, 2026).

✓ domain continuity 30 years registered✓ live verified Sep 10, 2026

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