What free/open source tools do you use for website monitoring?

[forkie]

What free/open source tools do you use for website monitoring?

I'm looking for a tool that will have following functionalities: - check HTTP response status - check specific strings (regex) in response content - check response time - alerting for the above - generating SLA reports

[JeremiahMN]

zabbix will do all of this for you....

It's not my favorite tool, but it is free and open source.

[forkie]

Zabbix is hard to configure. Need something easier.

[duskos]

I'm using Check_MK as a full scale monitoring solution. It is big and powerful, but configuration is pretty straight-forward with its Web Administration Tool. It will happily monitor single service or big bunch of services.

[m3tr0s]

Follow That Page, Uptime Robot