Analogues of New Relic for monitoring Windows, Linux servers?

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me2you2017-09-15 10:57:53

Monitoring

me2you, 2017-09-15 10:57:53

Received an email from New Relic...

This is a reminder that as of November 14th, 2017 New Relic Servers and our legacy alerting features will no longer be available to accounts without an active subscription to at least one New Relic product. The replacement for these are New Relic Infrastructure and New Relic Alerts which provide enhanced server monitoring and alerting capabilities.

They close the New Relic Servers service, and a new one to replace Infrastructure is only by subscription ...
Maybe someone knows the analogues of ala Newrelic for monitoring Windows, Linux servers in one service up to 5-10 servers (free, or for a nominal fee)? I don’t really want to raise my monitoring, not so critical machines are now tied to New Relic ...