Life & fun · alternatives · 2026

24 alternatives to RestCommander - Fast Parallel Async HTTP client as a Service

Fast Parallel Async HTTP client as a Service to monitor and manage 10,000 web servers. (Java+Akka) - eBay/restcommander

RestCommander is an asynchronous HTTP client service built with Java and Akka that enables users to monitor and manage large numbers of web servers simultaneously. It is designed for infrastructure teams and system… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. RestCommander - Fast Parallel Async HTTP client as a Service launched in 2014; newer entries below may have overtaken it.

1. 1
   Pings 8000 servers in 11 seconds: Parallel HTTP/SSH/TCP/Ping library▲22

   Fast Parallel Async HTTP/SSH/TCP/UDP/Ping Client Java Library. Aggregate 100,000 APIs & send anywhere in 20 lines of code. Ping/HTTP Calls 8000 servers in 12 seconds. (Akka) www.parallec.io - eBay/parallec

   2015 · github.com · its alternatives →

2. 2
   SocketCluster.io – flexible open-source real-time server with pub/sub▲217

   Scalable open source pub/sub SDK with support for RPC, JWT authentication and Kubernetes — optimized for async/await

   2016 · socketcluster.io · its alternatives →

3. 3
   Pure C Asynchronous HTTP Framework▲80

   Asynchronous C networking library with HTTP server, WebSockets, reverse proxy, HTTP/2 gRPC client, TLS and event loop. - Softmotions/iwnet

   2022 · github.com · its alternatives →

4. 4
   Whalesync▲362

   2-way sync Airtable, Webflow, Notion, Bubble, & Postgres

   2023 · whalesync.com · its alternatives →

5. 5
   Werk▲364

   Async first, all in one collaboration for remote teams

   2022 · its alternatives →

6. 6
   Asynchronous HTTP/2 client for Python 2.7▲94

   Tornado HTTP/2 Client. Contribute to vladmunteanu/th2c development by creating an account on GitHub.

   2018 · github.com · its alternatives →

7. 7
   Resterm – A terminal-based REST/GraphQL and gRPC client▲29

   Terminal API client for HTTP, GraphQL and gRPC. Plain .http files you can diff and version, with workflows, mocks, profiling, tracing, OpenAPI import, SSH tunnels, Kubernetes port-forwards, WebSocket, SSE and a CLI runner. - unkn0wn-root/resterm

   2025 · github.com · its alternatives →

8. 8
   HTTP/2 Python-Asyncio Web Microframework▲173

   2018 · gitlab.com · its alternatives →

9. 9
   WAPM – WebAssembly Package Manager▲186

   Hi HN! I’m Syrus, from the Wasmer team. We just released the new version of WAPM that is an order of magnitude better than the previous one (that we also announced here in HN two years ago! [0]), enabling an incredible experience for using and publishing WebAssembly packages. The tech stack that we are using includes: * Python and Django (for the backend) with Graphene (for the open GraphQL API [1]) and Django Channels with websockets over GraphQL [2] for subscriptions * Next.js [3] with React-Relay [4] and Tailwind.css [5] for the frontend * WebAssembly and Wasmer [6] (for the online shell)…

   2022 · wapm.io · its alternatives →

10. 10LT
    Lightweight Threads, Channels and Actors for the JVM▲116

    2013 · blog.paralleluniverse.co · its alternatives →

11. 11
    Whirlwind – Async concurrent hashmap for Rust▲140

    Hey HN, this is Will and David from Fortress (https://news.ycombinator.com/item?id=41426998). We use a lot of async Rust internally, and created this library out of a need for an async-aware concurrent hashmap since there weren’t many available in the Rust ecosystem. Whirlwind is a sharded HashMap with a fully asynchronous API. Just as dashmap is a replacement for std::sync::RwLock, whirlwind aims to be a replacement for tokio::sync::RwLock. It has a similar design and performance characteristics to dashmap, but seems to perform better in read-heavy workloads with tokio's…

    2024 · github.com · its alternatives →

12. 12IB
    IPC between multiple Java processes/JVMs with nanosecond latency▲114

    2015 · mappedbus.io · its alternatives →

13. 13
    Restate – Low-latency durable workflows for JavaScript/Java, in Rust▲185

    We'd love to share our work with you: Restate, a system for workflows-as-code (durable execution). With SDKs in JS/Java/Kotlin and a lightweight runtime built in Rust/Tokio. https://github.com/restatedev/ https://restate.dev/ It is free and open, SDKs are MIT-licensed, runtime permissive BSL (basically just the minimal Amazon defense). We worked on that for a bit over a year. A few points I think are worth mentioning: - Restate's runtime is a single binary, self-contained, no dependencies aside from a durable disk. It contains basically a…

    2024 · restate.dev · its alternatives →

14. 14
    Insomnia REST Client now open-source▲218

    Leading Open Source API Development Platform for HTTP, REST, GraphQL, gRPC, SOAP, and WebSockets

    2017 · insomnia.rest · its alternatives →

15. 15
    Async – Claude code and Linear and GitHub PRs in one opinionated tool▲107

    Hi, I’m Mikkel and I’m building Async, an open-sourced developer tool that combines AI coding with task management and code review. What Async does: - Automatically researches coding tasks, asks clarifying questions, then executes code changes in the cloud - Breaks work into reviewable subtasks with stack diffs for easier code review - Handles the full workflow from issue to merged PR without leaving the app Demo here: https://youtu.be/98k42b8GF4s?si=Azf3FIWAbpsXxk3_ I’ve been working as a developer for over a decade now. I’ve tried all sorts of AI tools out there including…

    2025 · github.com · its alternatives →

16. 16SH
    Scheme HTTP server with transparent async – 222k req/s▲17

    Mar 2026 · hyper.dev · its alternatives →

17. 17
    NativeRest▲136

    100% native, localfirst rest api client for mac, windows and linux. Supports multiple environmets, custom http methods, proxy server, offline mode and customizable themes. It's file first, you can import your collections and get started using NativeRest.

    2023 · nativesoft.com · its alternatives →

18. 18
    Postman▲182

    Postman is a powerful HTTP client to test REST API

    2014 · postman.com · its alternatives →

19. 19
    Concurrently Logging HTTP Requests▲69

    Log HTTP requests/responses separately, visualize their concurrency and report logs/errors in context of a request. - pablosichert/concurrency-logger

    2016 · github.com · its alternatives →

20. 20
    Backlog Grooming by Standuply▲137

    Asynchronous backlog grooming via Slack task-based surveys

    2019 · standuply.com · its alternatives →

21. 21
    Async tasks in 350 lines of C▲146

    Tasks are a primitive for asynchronous programming and an alternative to working with threads directly. Instead of creating a thread, performing work, then waiting on it using synchronization primitives, you only define a unit of work and let a scheduler decide when and where to execute it. The threads that the scheduler uses are created once and reused for many tasks throughout the program's lifetime. In most cases, creating and executing a task requires not even a single syscall and is a significantly faster operation than creating a thread, resulting in lower latency. Furthermore, tasks…

    2024 · github.com · its alternatives →

22. 22
    A dynamic C (Hot reloading) module-based Web Framework▲128

    A modular web framework for C, inspired by kernel modules. Dynamically upload and compile C code at runtime to build REST APIs, WebSocket services, and more. Includes support for JSON (Jansson), SQLite, OpenSSL, and streaming large data efficiently. - joexbayer/c-web-modules

    2024 · github.com · its alternatives →

23. 23
    Friday 2.0▲169

    Async operating system for remote work

    2021 · friday.app · its alternatives →

24. 24
    gRPC over WebRTC▲102

    gRPC over WebRTC. Contribute to jsmouret/grpc-over-webrtc development by creating an account on GitHub.

    2020 · github.com · its 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 →