Best Identity Resolution Software for JavaScript

SnowcatCloud is a cloud-hosted customer data infrastructure platform built on an open source Snowplow fork (OpenSnowcat) that enables organizations to collect, process, route, and integrate behavioral and event-level data at scale across web, mobile, server, and IoT sources so teams can build a real-time, first-party customer 360 view while retaining full ownership and control of their data; it supports multiple deployment models including cloud-hosted, fully managed service, “bring your own cloud,” and self-hosted open-source options to suit different privacy, cost, and infrastructure needs, all with enterprise-grade security (SOC 2 Type II) and real-time data delivery capabilities. It enriches event pipelines with identity resolution techniques like browser fingerprinting and probabilistic/deterministic matching to improve customer profiles, helps create a customer knowledge graph for deeper insights, and integrates with analytics and data warehouses.