Kiwi – End-to-End Kafka Subscriptions with WebAssembly

In plain words

Kiwi is a WebSocket adapter that connects client applications to Kafka data sources in real time. It uses WebAssembly plugins to handle custom business logic like authorization and event filtering on a per-client basis, eliminating the need for separate infrastructure. Operators can focus on writing filters and access controls rather than building custom solutions from scratch.

written from the facts on this page · September 2026

From the sources

Kiwi powers extensible, real-time data streaming to your end users - rkrishn7/kiwi

In the maker’s words, at launch

Hey HN! I'm excited to announce the release of Kiwi v0.1.1. I started working on Kiwi a few months ago with the primary motivation of providing an extensible WebSocket adapter that allows client applications to securely subscribe to real-time data sources such as Kafka. Often times, there is a desire to extend the…

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