SigNoz is an open-source observability platform.

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With SigNoz cloud

Since SigNoz natively supports OpenTelemetry, you just need to route the traces to SigNoz’s endpoint and set the ingestion key (note no https in the URL): 
TRACELOOP_BASE_URL=ingest.{region}.signoz.cloud
TRACELOOP_HEADERS="signoz-access-token=<SIGNOZ_INGESTION_KEY>"
Where region depends on the choice of your SigNoz cloud region:
RegionEndpoint
USingest.us.signoz.cloud:443
INingest.in.signoz.cloud:443
EUingest.eu.signoz.cloud:443
Validate your configuration by following these instructions

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With Self-Hosted version

Once you have an up and running instance of SigNoz, use the following environment variables to export your traces: 
TRACELOOP_BASE_URL="http://localhost:4318"