MONITOR SPIDER - Spider Sensors for your web

You are using an outdated browser. Please upgrade your browser to improve your experience.

Free plan — no credit card. 15 monitors, 5-minute checks, email alerts.

Change & defacement detection<br>Know the moment a page changes

MonitorSpider crawls your site to a depth you choose, fingerprints every page, and alerts you the instant content changes — a defacement, a broken deploy, an edited price, or a vanished page.

Recursive crawl with per-page content hashing.

Catch defacements and unauthorized edits fast.

Version history & line-by-line diffs — see exactly what changed.

Alerts by email, Slack, Telegram, or webhook.

Start free

Login monitoring<br>Your homepage being up isn't enough

A green uptime check doesn't mean anyone can actually sign in. MonitorSpider runs a real scripted login on a schedule and measures how long your post-login assets take to load — so you hear about a broken auth flow before your customers do.

Scripted login with success/failure assertions.

Per-element latency on the authenticated page.

Latency thresholds with debounced alerts.

Start free

Everything else you'd expect from a monitor

Change detection and login checks sit on top of a full uptime-monitoring engine.

Uptime & HTTP(S)<br>Status-code and response-body checks with response-time tracking and uptime %.

DNS record watch<br>Get alerted when an A, MX, TXT, or any DNS record changes out from under you.

FTP / SFTP<br>Confirm your file servers are reachable and accepting connections.

SOCKS proxies<br>Health-check SOCKS4/5 proxies from our probes.

SSL certificates<br>Track expiry and chain health so a cert never lapses on you again.

Multi-channel alerts<br>Email on every plan; Slack, Telegram & webhooks on Premium.

Server & agent metrics<br>Watch CPU, memory & disk from your servers — Prometheus, Nagios NCPA & Telegraf agents, with thresholds and graphs.

Public status pages<br>Publish a branded status page for your customers — live status and 90-day uptime, on your own slug.

Run a lot of client sites?

MonitorSpider is built for agencies and MSPs: watch every client's site — uptime, changes, logins, certs — from one dashboard, and route alerts wherever your team already works.

Every client site in one place

Team seats — give staff their own logins

Alert routing to Slack, Telegram & webhooks

Create a free account

Legal

Company

© 2026 MONITOR SPIDER. All Rights Reserved