Life & fun · alternatives · 2026

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. 5M Concurrent WebSockets launched in 2019; newer entries below may have overtaken it.

1. 12F
   2M fully loaded concurrent WebSockets▲158

   oatpp benchmark for 2 Million fully-loaded concurrent websocket connections.

   2019 · oatpp.io · its alternatives →

2. 2
   Tool for WebSocket benchmarks with Millions of concurrent connections▲11

   Websocket Client and Server for benchmarks with Millions of concurrent connections. - oatpp/benchmark-websocket

   2019 · github.com · its alternatives →

3. 3
   ZeroHTTPd: A web server to teach Linux performance, with benchmarks▲472

   Articles in this series Part I. Iterative ServersPart II. Forking ServersPart III. Pre-forking ServersPart IV. Threaded ServersPart V. Pre-threaded ServersPart VI: poll-based serverPart VII: epoll-…

   2019 · unixism.net · its alternatives →

4. 4
   Python can make 3M+ WebSocket keys per second▲83

   :zap: Optimizing Python code by implementing a C++ extension - szabolcsdombi/optimization-demo

   2023 · github.com · its alternatives →

5. 5
   HTML5 Speedtest by Ookla▲282

   The world’s most trusted internet speedtest

   2016 · beta.speedtest.net · its alternatives →

6. 6
   Go HTTP Request Router Benchmark▲89

   Go HTTP request router and web framework benchmark - julienschmidt/go-http-routing-benchmark

   2014 · github.com · its alternatives →

7. 7
   WebSocket-first development▲120

   An demo app for lattice-core. Contribute to jasonl99/card_game development by creating an account on GitHub.

   2017 · github.com · its alternatives →

8. 8
   Browser Arena▲175

   Open-source benchmarks for cloud browser infrastructure

   Apr 2026 · browserarena.ai · its alternatives →

9. 9
   Speedometer▲70

   Browser benchmark for measures web app responsiveness

   2014 · browserbench.org · its alternatives →

10. 10
    SocketCluster▲93

    A scalable realtime engine for Node.js

    2015 · socketcluster.io · its alternatives →

11. 11
    Building WebSocket in Apache Iggy with Io_uring and Completion Based IO▲29

    Nov 2025 · iggy.apache.org · its alternatives →

12. 12
    High performance room-based chat server example built with Oat++▲8

    Collection of oatpp WebSocket examples. Contribute to oatpp/example-websocket development by creating an account on GitHub.

    2019 · github.com · its alternatives →

13. 13
    FlowTime▲72

    A Pomodoro-driven timer for Chrome

    2015 · chromewebstore.google.com · its alternatives →

14. 14
    KORE.io▲88

    A fast SPDY capable web server for web development in C

    2015 · kore.io · its alternatives →

15. 15
    Condor – A library for building scalable TCP servers in Erlang▲65

    A minimal library for building scalable TCP servers in Erlang - sinasamavati/condor

    2018 · github.com · its alternatives →

16. 16AS
    A simple embedded websocket server in C++▲5

    Drawing attention to an open source project of mine

    2015 · xania.org · its alternatives →

17. 17
    100,000 Database ops/sec in IE6 on 2GB Atom CPU▲7

    An open source cybersecurity protocol for syncing decentralized graph data. - Create new page · amark/gun Wiki

    2016 · github.com · its alternatives →

18. 18ED
    Event-driven, user-space and highly-scalable TCP/IP stack [pdf]▲29

    2015 · github.com · its alternatives →

19. 19
    Hellepoll is a blazingly-fast async HTTP server written in C++▲35

    This is based on an approach I made for a very high performance message and video multiplexing server. The project died, but I'm glad I get to share the a basic version with some http test code now. I admit this is the second time I've tried to show this off here today; I posted earlier but it got lost when no-one was watching :(

    2011 · github.com · its alternatives →

20. 20NS
    Network Speed Test Against Digital Ocean (NYC, FRA, TOR, SGP)▲7

    2020 · keychest.net · its alternatives →

21. 21
    OONI▲6

    Open Observatory of Network Interference

    2017 · ooni.org · its alternatives →

22. 22
    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 →

23. 23
    Trying to fix the web scraping industry's benchmark problem▲18

    We've been trying to evaluate web scraping companies, but when you look at their benchmarks, you can't verify anything, and they mostly exist to prove the company is successful. They put somewhere between 98% and 100% because they pick their own urls, define success their own way, and don't publish the harness. We also saw companies like scrapfly astroturf websites like scrapeway and call them independent. So, we built an open source benchmark that we want to represent the frontier of web data. We're trying to look across all major anti-bot providers and industries, to build a comprehensive…

    Jul 2026 · github.com · its alternatives →

24. 24
    Simple, fast and fun communication over Websockets▲17

    Simple, fast & fun communication over Websockets. Contribute to penalosa/epsilon 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 →