is-up
Check website availability with ease.
Pricing
Free tier
Flat rate
Adoption
↘CoolingLicense
Open Source
Data freshness
Aging · Jun 8, 2026Overview
What is is-up?
is-up is a simple and effective tool to check if a website is up or down. It's useful for developers, system administrators, and anyone who needs to monitor the status of websites.
Key differentiator
“is-up stands out as a lightweight, no-frills tool for checking website status, making it ideal for quick checks and simple integration into existing projects.”
Capability profile
Capability Radar
Honest assessment
Strengths & Weaknesses
↑ Strengths
↓ Weaknesses
is-up only checks if a website is up or down without providing detailed metrics such as response time, uptime percentage, or error rates.
Users need to implement their own alerting mechanisms or integrate with third-party services for notifications when a website goes down.
The official documentation is sparse, making it difficult for new users to understand advanced usage without referring to the source code or community forums.
Fit analysis
Who is it for?
✓ Best for
Developers who need a simple and lightweight tool to check website status without complex setup.
System administrators looking for an easy way to monitor the availability of websites.
✕ Not a fit for
Projects requiring advanced monitoring features like detailed uptime reports or custom alerting systems.
Teams needing real-time streaming data from monitored sites.
Cost structure
Pricing
Free Tier
Available
Open source — free to use
Starts at
$0
Model
Flat rate
Enterprise
None
Performance benchmarks
How Fast Is It?
Ecosystem
Relationships
Works well with
Integrations
Next step
Get Started with is-up
Step-by-step setup guide with code examples and common gotchas.