Apollo GraphQL
Apollo GraphQL provides tools for building and operating a shared API layer across applications and services. Its ecosystem includes client and server libraries, while GraphOS adds schema management, routing, observability and collaboration for production GraphQL systems.
CometChat
CometChat provides APIs, SDKs and ready-made interfaces for adding conversations to a product. It helps developers embed messaging and calls in marketplaces, communities, education platforms and other apps instead of building communications infrastructure from scratch.
Stream
Stream provides developer APIs and interface SDKs for adding chat, video calls, livestreaming and activity feeds to an existing application.
treg.to
treg.to is a shared tool catalog and API gateway for AI agents. It brings external data, generation services and a team's own integrations behind one endpoint and credential, with per-call pricing rather than requiring a separate subscription for every occasional lookup.