Features
One place to watch everything you run
Four kinds of monitors, five alert channels, and the history you need to understand every outage.
Website monitoring
Find out the moment your website stops responding
We request your URL on a schedule and measure how long it takes. Connection errors, timeouts and 4xx/5xx responses are treated as downtime.
- GET, HEAD or POST requests
- Follow redirects or not, your choice
- Treat specific status codes (like 401) as up
- Custom timeout per monitor
- Response time recorded on every check
Keyword monitoring
Catch pages that load but are broken
A server can answer "200 OK" while showing an error page or an empty cart. Keyword monitoring checks the page content itself.
- Alert when a keyword is missing (e.g. "Add to cart")
- Or when a keyword appears (e.g. "Fatal error")
- Case-insensitive matching
- Works alongside the status code check
SSL monitoring
Never let a certificate expire by surprise
Expired certificates show visitors a scary browser warning. We read your certificate's expiry date on HTTPS checks and warn you ahead of time.
- Warning shown when expiry is near (you choose how many days)
- Monitor goes down if the certificate has expired
- Certificate validity checked on every request
Port monitoring
Watch the services behind your website
Not everything speaks HTTP. Port monitors open a TCP connection to any host and port and alert you if it's refused or times out.
- Mail servers (SMTP, IMAP)
- Databases (MySQL, PostgreSQL, Redis)
- SSH, FTP and custom services
- Connection time recorded on every check
Included with every monitor
Failure threshold
Alert only after N failed checks in a row, so brief blips don't cause noise.
Response time chart
The last 24 hours at a glance, with failed periods highlighted.
Uptime percentages
Uptime over 24 hours, 7 days and 30 days.
Incident log
When each outage started, how long it lasted and the error behind it.
Check now
Trigger a check instantly, for example right after a deploy.
Pause and resume
Pause a monitor during planned maintenance, resume when done.
Start monitoring in under a minute
Add your website, choose where alerts should go, and we'll start checking right away. Free forever for up to 5 monitors.