OnlineOrNot offers 3 free monitors with 3-minute intervals. PingZen offers up to 55 free monitors with 23 protocols and 1-minute intervals.

Does OnlineOrNot check SPA rendering?

Yes, Puppeteer-based browser checks render React, Vue, and Angular apps. PingZen checks HTTP responses but not JavaScript rendering.

Does OnlineOrNot support TCP or DNS?

No. OnlineOrNot focuses on HTTP, browser, and heartbeat checks. PingZen monitors TCP, DNS, SSL, WebSocket, gRPC, SMTP, and 16 more protocols.

How many locations does OnlineOrNot have?

130+ global locations. This is one of the largest monitoring networks in the industry.

PingZen vs OnlineOrNot: 22 Protocols vs Browser Checks from 130+ Locations

OnlineOrNot is a customer-backed (no VC) monitoring service focusing on API and browser-based checks. It monitors from 130+ global locations, supports Puppeteer browser checks for SPA rendering (React, Vue, Angular), and offers GraphQL-specific monitoring. Free plan: 3 monitors, 3-minute intervals.

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Quick Comparison

Best Value

PingZen

Price: Free forever
Intervals: 1 minute
Protocols: 23 protocols
Alerts: 3 channels

OnlineOrNot

Price: Free (3 monitors) / from $12/month
Intervals: 3 min (free) / 30s (paid)
Protocols: 4 (HTTP, Heartbeat, Browser, Keyword)
Alerts: Email, SMS, Slack, Discord, PagerDuty

Feature Comparison

Feature Comparison
Feature	PingZen	OnlineOrNot
HTTP/HTTPS monitoring
Browser checks (Puppeteer) Renders React/Vue/Angular
GraphQL monitoring
Heartbeat/cron monitoring
Keyword monitoring
TCP monitoring
DNS monitoring
SSL certificate monitoring
WebSocket monitoring
gRPC monitoring
SMTP monitoring
130+ global locations
Telegram alerts
Slack integration
Incident management
Status pages

Why Choose PingZen

23 protocols vs 4 — TCP, DNS, SSL, WebSocket, gRPC, SMTP, FTP, and more
Up to 55 free monitors vs 3 on free plan
Full incident management with timeline
Telegram, Slack, Discord, MS Teams, Mattermost, Webhook alerts
1-minute intervals on free plan
No $12/month needed for basic monitoring

When OnlineOrNot is Better

130+ global monitoring locations (massive network)
Browser checks rendering React/Vue/Angular SPAs
GraphQL-specific API monitoring
Enterprise 15-second intervals
Open-source CLI tool

Not sure about PingZen vs OnlineOrNot?

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Migration Tip

OnlineOrNot is excellent for front-end teams needing browser rendering checks and GraphQL monitoring. PingZen is better for backend/DevOps teams needing 22 network protocols, up to 55 free monitors, and incident management.