Dev tools · alternatives · 2026

24 alternatives to Boltly

Postman for Socket.io

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Boltly launched in 2016; newer entries below may have overtaken it.

1. 1
   Postman for Mac (Beta)▲372

   Build, test, and document your APIs faster

   2016 · postman.com · its alternatives →

2. 2
   Postman▲182

   Postman is a powerful HTTP client to test REST API

   2014 · postman.com · its alternatives →

3. 3
   SocketCluster▲93

   A scalable realtime engine for Node.js

   2015 · socketcluster.io · its alternatives →

4. 4
   Request Eagle▲68

   Fast and open-source Postman alternative

   13d ago · requesteagle.tokarev.work · its alternatives →

5. 5
   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 →

6. 6
   Overv.io (beta)▲120

   We give GitHub Issues project-tracking superpowers.

   2014 · overv.io · its alternatives →

7. 7
   Postkite.io▲72

   A super simple announcements widget, made for startups

   2022 · its alternatives →

8. 8
   Requestly 2.0▲112

   Intercept & modify HTTP requests

   2021 · requestly.com · its alternatives →

9. 9
   Roley▲26

   API Testing tool built for Teams

   May 2026 · roley.io · its alternatives →

10. 10
    Helo▲103

    An independent email API from former Postmark folks

    22d ago · helohq.com · its alternatives →

11. 11
    Library of API collections for Postman▲77

    Accelerate API development with Postman's all-in-one platform. Streamline collaboration and simplify the API lifecycle for faster, better results. Learn more.

    2017 · postmancollections.com · its alternatives →

12. 12
    Post.As▲67

    A simple tool to publish _____ on the web

    2015 · its alternatives →

13. 13SP
    Songket, Postman Like Tool for Phoenix Websocket▲5

    2019 · songket.netlify.com · its alternatives →

14. 14
    WebsocketD▲82

    WebSockets are easy now

    2015 · websocketd.com · its alternatives →

15. 15SW
    Socket Wrench – Insomnia/Postman for Websocket Testing▲23

    2019 · asleepysamurai.com · its alternatives →

16. 16
    socket.io▲23

    Socket.IO enables real-time bidirectional communication

    2015 · socket.io · its alternatives →

17. 17
    Rusteerio by Context.dev▲71

    Keep your Cheerio code. Make it faster.

    4d ago · github.com · its alternatives →

18. 18
    Sockudo▲14

    High-performance Pusher alternative in Rust

    2025 · its alternatives →

19. 19
    Postman Sync▲6

    A whole new experience to supercharge your API workflow.

    2015 · its alternatives →

20. 20
    Poste.io – free modern Docker email server with web administration▲5

    2015 · hub.docker.com · its alternatives →

21. 21AS
    A simple multiplayer game with Python and Socket.io▲33

    2013 · stuff.pyramidlabs.in · its alternatives →

22. 22EA
    Early access to ready-made, tested API collections for Postman▲6

    2017 · producthunt.com · its alternatives →

23. 23
    test.io▲1

    Online socket.io testing tool

    2020 · io-tester.herokuapp.com · its alternatives →

24. 24
    Sockly – Easiest Way to Work with API on WebSockets or WebRTC▲9

    Contribute to pshihn/sockly development by creating an account on GitHub.

    2019 · 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 →