Alternatives

Products that do what Atrahasis does

Api Client and Development Platform

1
Apidog Fast Request▲512
Develop APIs fast + automatically detect endpoints
2025
2
Sparrow▲331
The Open Source API Testing Tool For All Developers
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3
ApyHub Fusion▲508
Build, test, document your APIs & collaborate in real-time
2024
4
Sparrow▲457
The lightest and fastest platform for API testing
2025
5
Apidog▲571
All-in-one collaborative API development platform
2024
6
Fern▲260
Instant Docs and SDKs for your API
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7
Conektto API-First Design Studio▲157
API design studio for product managers
2023
8
Cursor for your API▲478
Generate, edit, lint & test your API workflow in one place
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9
Treblle 3.0▲602
Build, ship, and govern APIs in one place
2024
10AJ
Agents.json – OpenAPI Specification for LLMs▲212
Hey HN, we’re building an open specification that lets agents discover and invoke APIs with natural language, built on the OpenAPI standard. agents.json clearly defines the contract between LLMs and API as a standard that's open, observable, and replicable. Here’s a walkthrough of how it works: https://youtu.be/kby2Wdt2Dtk?si=59xGCDy48Zzwr7ND. There’s 2 parts to this: 1. An agents.json file describes how to link API calls together into outcome-based tools for LLMs. This file sits alongside an OpenAPI file. 2. The agents.json SDK loads agents.json files as tools for an LLM that…
2025 · github.com
11
Nokori▲147
The universal backend platform for every project
2023
12
Flowlet▲275
A low-code platform for connecting and providing APIs
2022
13AF
A faster way to prototype your APIs using OpenAPI 3 and Swagger UI▲77
2020 · github.com
14RA
REST Alternative to GraphQL and tRPC▲123
2023 · openapistack.co
15
NativeRest▲136
Native REST API client for Windows
2023
16
Apideck▲109
One API to build CRM, Accounting, HRIS, and ATS integrations
2022
17
create-api.dev by Kong▲150
Generate and share OpenAPI specs with AI
2025
18AG
Auto-generate an OpenAPI spec by listening to localhost▲178
Hey HN! We've developed OpenAPI AutoSpec, a tool for automatically generating OpenAPI specifications from localhost network traffic. It’s designed to simplify the creation of API documentation by just using your website or service, especially useful when you're pressed for time. Documenting endpoints one by one sucks. This project originated from us needing it at our past jobs when building 3rd-party integrations. It acts as a local server proxy that listens to your application’s HTTP traffic and automatically translates this into OpenAPI 3.0 specs, documenting endpoints, requests, and…
2024 · github.com
19WB
We built a tool that automatically generates API tests▲108
Hi, this is Mish and Sebastian. We are working on Step CI - a fully automated API testing platform for developers. Step CI works programming-language independent and for different API paradigms (REST, GraphQL, XML). Our CLI and test runner are available on GitHub (https://github.com/stepci) under the MPLv2 license. Since our last launch, Step CI is now able to generate automated tests for your API based on your OpenAPI (Swagger) spec. This saves you a lot of time as you never have to write and maintain your tests again! We would like to invite you to try our tool and give us…
2022 · stepci.com
20FA
FastOpenAPI – automated docs for many Python frameworks▲153
2025 · github.com
21
Fireapis▲105
Build APIs with NoCode
2021
22TA
TypeAPI – An OpenAPI alternative optimized for code generation▲55
2023 · typeapi.org
23
Visual Swagger Editor for Teams▲89
Link your app design to API calls
2022
24
ApiHome▲73
Home of API testing
2022

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