> But I do hope we get a nice open source (self hostable) tool that can do what it claims (error reporting, tracing, logging, metrics) because there's no such thing that does all well at the moment that's mature.

Keep an eye out for Highlight then!

> Couldn't they just reuse other project's sdk or help with OpenTelemetry? Developing yet another batch of sdk for a dozen language seems like wasted time.

We use OpenTelemetry for all of our SDKs. All we do is thinly wrap the SDK so developers don't have to deal with OpenTelemetry internal if they don't want to.

There's a doc on it here: https://www.highlight.io/docs/general/company/open-source/co...