Nango is an open-source, comprehensive integrations platform that offers a seamless user experience, pre-built integrations for 200+ APIs, unified and direct integration support, and a modern developer platform to extend and customize integrations. It has the largest open-source catalog of integrations and provides turnkey solutions with UI components, pre-built integrations, full observability suite, and fanatical support from API experts. Nango is more modern and robust compared to Tray Embedded, offering built-in connectors and advanced features that save engineering time and reduce maintenance. Companies choose Nango for its extensive API and integration coverage, focus on developer experience, exceptional support, flexible pricing, self-hosting option, and ability to adapt to changing business needs. Merge.dev offers a unified API for product integrations, abstracting various source APIs into a single data model and API interface, allowing quick setup and customization options. Apideck provides pre-built unified APIs for CRM, Accounting, and HRIS, with limited customizations available. Building integrations in-house offers complete control but requires significant time investment and long-term maintenance commitment, with pros including no constraints, future-proofing, and flexibility, but cons including slow development, underestimated infrastructure needs, high maintenance demand, scalability concerns, lack of external support, knowledge silos, and training new employees. Nango is an ideal replacement for Tray Embedded if companies prioritize a comprehensive catalog of pre-built integrations, productive developer experience, unified platform, security, and compliance.