Work · alternatives · 2026
24 alternatives to Kiwi – End-to-End Kafka Subscriptions with WebAssembly
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 real-time data that flows through sources like Kafka to end users in a fast and secure manner. Rather than standing up custom solutions, Kiwi lets operators focus on writing business logic, by loading custom WASM plugins that handle tasks like authorization and event filtering per…
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… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Kiwi – End-to-End Kafka Subscriptions with WebAssembly launched in 2024; newer entries below may have overtaken it.
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A realtime server for the modern web
2016 · deepstream.io · its alternatives →
- 2
Redpanda Console is a developer-friendly UI for managing your Kafka/Redpanda workloads. Console gives you a simple, interactive approach for gaining visibility into your topics, masking data, managing consumer groups, and exploring real-time data with time-travel debugging. - redpanda-data/console
2020 · github.com · its alternatives →
- 3
Know what people are saying about any site you’re visiting
2015 · metafruit.com · its alternatives →
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Kelviq▲530Hi HN, We've been building Kelviq for the last couple of months and it's finally ready to share. Kelviq is a Merchant of Record (MoR) and monetization platform that you can integrate without building a custom webhook-to-database syncing layer. Along with handling global taxes, checkout, and compliance, it acts as the real-time source of truth for your users feature access and usage credit balances. Why we built this: Through our other project, ParityDeals, we saw firsthand how much founders struggle with billing infrastructure. Integrating a payment gateway is easy, but actually building…
May 2026 · kelviq.com · its alternatives →
- 6
Scalable open source pub/sub SDK with support for RPC, JWT authentication and Kubernetes — optimized for async/await
2016 · socketcluster.io · its alternatives →
- 7
This is the source code to Franz, a native desktop client for Apache Kafka I've been working on for the past ~three years or so. Around 2021, I started using Kafka at a startup and I didn't like any of the clients that were available at the time, so I decided to build my own in my spare time[1]. I wanted a solid native experience on the Mac that wasn't web based and didn't require any Docker containers to run. A few months ago, I decided to make the code source-available[2] in part because I like the idea of my users being able to see the code they're running and in part because I want to…
2024 · github.com · its alternatives →
- 8
Kafka Socks▲81An easy-to-use, lightweight KafkaJS to Socket.io library
2021 · github.com · its alternatives →
- 9
Contribute to panyam/KafkaLite development by creating an account on GitHub.
2015 · github.com · its alternatives →
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A minimalistic in-memory key value store. Contribute to sdslabs/kiwi development by creating an account on GitHub.
2020 · github.com · its alternatives →
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Kafka 0.8.0 broker implementation on top of Cloudflare Workers - maxwellpeterson/kafka-worker
2022 · github.com · its alternatives →
- 12DA
Hey HN! I’ve written a bunch of WebSocket servers over the years to do simple things like state synchronization, WebRTC signaling, and notifying a client when a backend job was run. I realized that if I had a simple way to create a private, temporary, mini-redis that the client could talk to directly, it would save a lot of time. So we created DriftDB. In addition to the open source server that you can run yourself, we also provide https://jamsocket.live where you can use an instance we host on Cloudflare’s edge (~13ms round trip latency from my home in NY). You may have seen my…
2023 · driftdb.com · its alternatives →
- 13
Open-Source Web UI for Apache Kafka Management. Contribute to provectus/kafka-ui development by creating an account on GitHub.
2021 · github.com · its alternatives →
- 14MD
Hey HN, I’m an engineer at Supabase [0] and one of the creators of this demo. My team and I have been working hard to bring developers the next version of Supabase Realtime. The current version of Realtime [1] is a Change Data Capture (CDC) server for a PostgreSQL database that broadcasts changes via WebSockets to authorized subscribers. It’s written in Elixir/Phoenix. The server utilizes PostgreSQL’s logical replication functionality, which writes database changes to Write-Ahead Logging (WAL) segment files, and a replication slot, responsible for managing and retaining WAL files.…
2022 · multiplayer.dev · its alternatives →
- 15PS
Hello HN, I am Sai Srirampur, one of the Co-founders of PeerDB. (https://github.com/PeerDB-io/peerdb). We spent the past 7 months building a solid experience to replicate data from Postgres to data warehouses. Now we're expanding to queues. PeerDB Streams provides a simple and native way to replicate changes as they happen in Postgres to Queues (Kafka, Redpanda, Google PubSub, etc). We use Postgres logical decoding to enable Change Data Capture (CDC). Blog post here: https://blog.peerdb.io/peerdb-streams-simple-native-postgres.... 10-min quickstart here:…
2024 · its alternatives →
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- 17FR
Deliver real-time data and low-latency WebSockets & pub/sub at the edge with Fastly. Scale chat, IoT, live apps and messaging with a self-managed infrastructure.
2017 · fanout.io · its alternatives →
- 18
Kafka-based Job Queue for Python. Contribute to joowani/kq development by creating an account on GitHub.
2016 · github.com · its alternatives →
- 19
Losant Kiln▲103The fastest way to build APIs for IoT applications
2017 · losant.com · its alternatives →
- 20
Simple online database service in the cloud with NoSQL, REST API, low code javascript hooks, MongoDB support and more. Perfect for API automation, custom development, enterprise, backoffice, serverless backends, database driven websites. It provides easy collaboration and data management with secure
2016 · restdb.io · its alternatives →
- 21
🦎 A lightweight, multi-protocol gateway for event-driven applications and AI agents. Expose and govern Kafka, MQTT, APIs, and MCP through one high-performance engine with shared routing, security, schema, and observability. - aklivity/zilla
2023 · github.com · its alternatives →
- 22
Hello Everyone! We built SQLFlow as a lightweight stream processing engine. We leverage DuckDB as the stream processing engine, which gives SQLFlow the ability to process 10's of thousands of messages a second using ~250MiB of memory! DuckDB also supports a rich ecosystem of sinks and connectors! https://sql-flow.com/docs/category/tutorials/ https://github.com/turbolytics/sql-flow We were tired of running JVM's for simple stream processing, and also of bespoke one off stream processors I would love your feedback, criticisms and/or…
Dec 2025 · sql-flow.com · its alternatives →
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Vartiq▲97Hi HN, I’ve been working on Vartiq, a plug-and-play Webhook as a Service platform. What it is: Sending outbound webhooks reliably is a pain many SaaS products face. You end up building: - Delivery logic with retries and exponential backoff - Dead-letter queues for failed deliveries - Observability pipelines for logs and debugging - Auto-scaling infra to handle spikes in events Vartiq aims to take all of that off your plate. Key features: Zero lost events – reliable delivery with auto retries Dead-letter handling out of the box Live observability – dashboards, delivery logs, and metrics…
2025 · vartiq.com · its alternatives →
- 24
When building Hookie, I worked with NATS Jetstream a lot. While you can do everything using the CLI, I prefer the feeling of a nice GUI better. So I built one.
Aug 2026 · streambench.app · its alternatives →
Also compare
- Deepstream.io – open-source real-time server with pub/sub and data sync alternatives
- Kowl – An Open Source WebUI for Apache Kafka with a good UI and UX alternatives
- Chrome/FF plugin brings the HN and Reddit conversation to you as you surf alternatives
- Wafka alternatives
- Kelviq alternatives
- SocketCluster.io – flexible open-source real-time server with pub/sub alternatives
Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →