Observed arrival · 2026-10-25

LocalSecTools: a browser-side security workbench

localsectools.com Visit website

Editorial interest 77/100 Selection signal · not a rating of the site

A set of 10 security, Linux, and cloud utilities, with 42 ready-made presets, presented as running entirely in your browser.

Landing page captured for the 2026-10-25 issue.

For: Security practitioners handling network, Linux, identity, and threat-intel tasks
Worth noticing: The subnet demo shows 10.42.0.0/20, 4,094 usable hosts, and a 255.255.240.0 mask.

Field notes

The interface offers category filters and a Ctrl K search for jumping to a tool or preset. Examples include a cron visualizer with previews in UTC and local time, and an IOC extractor that lists CSV and JSON export. The page also provides a live CIDR example with its network bits, host bits, mask, and address range.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

✦PrettyNotable craft visible

◎NicheUnusually specific use

ƒJavaScriptBrowser-side code central

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