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About

Sentinel is a hosted monitoring service for websites, APIs, and network services. It runs HTTP/HTTPS, JSON/API, keyword, SSL certificate, DNS, domain expiration, ping, TCP port, cron job, and heartbeat checks, with response-time data and public status pages. Checks can run as often as every 15 seconds from 15 locations across six continents, with multi-location confirmation for outage alerts. Teams can receive notifications through email, SMS, Slack, Microsoft Teams, Discord, Telegram, PagerDuty, and webhooks. Sentinel also provides a REST API, command-line tools, a Terraform provider, and an MCP server for automation. A free plan is available, while paid plans start at $14 per month; plans include API access and do not charge per seat. The service is intended for developers, DevOps and SRE teams, and businesses that need to monitor service availability.

About

Most uptime monitors only check if your server responds. upsonar goes further — it loads your page and discovers every external dependency: CDN-hosted files, third-party scripts, web fonts, and API endpoints. If any of them fail, you get alerted before your users notice. Availability checks run from multiple global regions simultaneously, so regional CDN failures and localized outages don't go undetected. Beyond uptime, upsonar monitors SSL certificates approaching expiration, tracks domain expiry dates to prevent renewal failures, and detects DNS record changes that could indicate unauthorized modifications. All five monitoring types work together in one dashboard. Notifications reach you through email, Telegram, or webhooks compatible with Slack, Discord, and PagerDuty. Get started free with 3 websites — all features included, no credit card needed.

Platforms Supported

Windows Not Supported
Mac Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Developers, IT professionals, DevOps and SRE teams, and SaaS businesses.

Audience

Developers, DevOps engineers, system administrators, SaaS companies, web agencies, freelancers, e-commerce businesses, and site reliability teams

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Supported

API

Offers API Not Supported

Screenshots and Videos

No images available

Screenshots and Videos

No images available

Pricing

$14/month
Free plan available. Paid plans start at $14 per month; plans include API access and have no per-seat fee. A 14-day free trial is available on paid plans.
Free Version Supported
Free Trial Supported

Pricing

€10/month
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Supported

Company Information

Rootstuff
Founded: 2010
United States
sentinel.rootstuff.io

Company Information

upsonar.io
Founded: 2025
Cyprus
upsonar.io

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Pulsecima

Alternatives

Pulsecima Pulse

Pulsecima Pulse

Pulsecima

Categories

Website Monitoring Supported

Categories

Website Monitoring Supported

Integrations

Discord Supported
GitHub Supported
Microsoft Teams Supported
Model Context Protocol (MCP) Supported
PagerDuty Supported
Rootly Supported
Slack Supported
Telegram Supported
Terraform Supported
incident.io Supported
n8n Supported

Integrations

Discord Not Supported
GitHub Not Supported
Microsoft Teams Not Supported
Model Context Protocol (MCP) Not Supported
PagerDuty Not Supported
Rootly Not Supported
Slack Not Supported
Telegram Not Supported
Terraform Not Supported
incident.io Not Supported
n8n Not Supported
Claim Sentinel by Rootstuff and update features and information
Claim Sentinel by Rootstuff and update features and information
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