AI · alternatives · 2026

24 alternatives to Postman API Platform

Discover, test, and integrate APIs/LLMs to accelerate agents

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1. 1
   Agent Builder by Thesys▲429

   Build AI agents that respond with UI instead of text

   Feb 2026 · thesys.dev · its alternatives →

2. 2
   Gradient▲153

   Developer API for building private LLMs that you own

   2023 · its alternatives →

3. 3
   Officely AI▲203

   Any process to AI with all LLM models

   2024 · its alternatives →

4. 4
   AgentX 2.0▲673

   Build your own cross-vendor multi-agent AI team

   2025 · agentx.so · its alternatives →

5. 5
   Agent Simulate▲413

   Test your AI apps with thousands of digital humans

   2025 · its alternatives →

6. 6
   Latitude 2.0▲516

   The 1st agent that builds agents

   Sep 2025 · latitude.so · its alternatives →

7. 7
   Bot Builder by Recast.AI▲288

   Create the most advanced bots in the simplest way

   2016 · its alternatives →

8. 8
   Daily Bots▲223

   Build voice-to-voice AI agents with any LLM with Open Source

   2024 · its alternatives →

9. 9
   Agent M - Powered by Floatbot.AI▲268

   Generative AI powered Master Agent Developer Framework

   2023 · its alternatives →

10. 10
    HarnessRouter▲238

    Bring the world's best AI agents into your app, with one API

    Jul 2026 · harnessrouter.ai · its alternatives →

11. 11
    LLMWare▲358

    Dev tool to make AI apps to deploy privately or locally

    2024 · its alternatives →

12. 12
    Mistral Agents API▲268

    Build capable AI agents with memory & tools

    2025 · its alternatives →

13. 13
    Colossal▲135

    Effortlessly integrate tool-using agents with a single fetch

    2025 · its alternatives →

14. 14
    Portals▲118

    AI Agent Builder Toolkit

    2025 · its alternatives →

15. 15
    Scoopika - TS packages▲104

    Bring reliable AI virtual assistants to your app

    2024 · its alternatives →

16. 16
    Shortcut for Agents▲157

    Plan and build at lightning speed with AI agents in Shortcut

    2025 · its alternatives →

17. 17
    AI-assisted prompt builder▲61

    Integrate LLMs into your product in minutes with AI's help

    2023 · its alternatives →

18. 18
    APIEval-20▲121

    An open benchmark for AI agents that test APIs

    May 2026 · resources.kusho.ai · its alternatives →

19. 19
    Postman▲182

    Postman is a powerful HTTP client to test REST API

    2014 · its alternatives →

20. 20
    Agentic Botsify▲56

    Prompt, run, and deploy agents across Social Media and LLMs

    2025 · botsify.com · its alternatives →

21. 21
    UseAgents▲83

    Define tools once for agents use them everywhere

    Mar 2026 · useagents.site · its alternatives →

22. 22
    Ai Agents for Machines▲102

    Build your own AI Agent for machines!

    2025 · its alternatives →

23. 23NW
    New way to test APIs with OpenAPI and Postman▲80

    2021 · github.com · its alternatives →

24. 24
    Poe API▲106

    Quora's platform for interacting with AI-based bots

    2023 · 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 →