Hey Harish, one of the ways in which we differentiate from PinPoint & Skywalking is that we support opentelemetry instrumentation.
As per my understanding, PinPoint only supports Java, PHP and Python today. SigNoz being based on opentelemetry can support all the language framework which Opentelemetry supports ( which is much broader)
Also, we support detailed filtering and custom aggregates over traces. I have not played with Skywalking or PinPoint personally - but it seems from their docs that their trace filtering capability and ability to generate custom aggregates is a bit limited.
Currently, we support metrics and traces - but we also have adding log management in our roadmap. So, SigNoz would be a drop in alternative to SaaS tools like DataDog
If you dive deeper in skywalking/pinpoint - would love to know what you find in your research