RudderStack, a headless customer data platform. With RudderStack, you can bring all your customer data/events from to a single warehouse in real time. You can then send the unified data to 200+ destination for user anaytics and personalization. You can do so in a privacy-focused manner using data transformation feature to mask/delete PII/sensitive data
Source code : https://github.com/rudderlabs/rudder-server License : AGPLv3