opensourcestartups
                          _|                                                                                                  (             h       . )            g          '                    #    -        @          
        \[                                                                                         } }                                            .               g|    >                         +           .             
                             =<    H                          {         .       ;    \ (                                                     .                                         .      !                             
   .               ]   @        \                                  "                       ;                          .      ]         .           .            [       .  .                                          .     
           @             `                                                    _  @                                                         :           *                0.      #                            +              
                                 .         :                                 !(                                                                 .                       /    .                                   ^        H 
                              *      `                     )                @                                                          >                 0                                                    !             
            _                                                          .       *                                                 .            {* #                       |                  '     1   - 0 /             ;   
  .:             /               /     1                                                      ]              |                                  +            _      `                       .  -~          /                
              `                                 .              .                                  ]                            .                                                                                            
                     ,                                  =         /<                             <              /       !    ]        0.                                                          <             .           
                                                           [                 {                   g                                                               \             !        "                                   
               [*    0                                                                            |                        ,                                     "    } ]     ._                             \              
                      "  )       _        g           g                           ^                              /      `           =                                  |            *                   }                   
        1  -                                                                           '/            _                                                                                {#         ~   (                      
  .                                     _                                                                     ;                              1       .    "                .                                                
                               [0                                                        .             @                                 ]                        #              "               g             g            
                                >  #  @                  .                  :                               .               .  >                    .   )_                   .                                              
             }    h                                  ,                 >             >                          }                                     .                            -             ;     #                    
          =                                                              .            \          ^                  +       H `    !             .                                 0     ]              ;                   
                                                               (             /          |        ( ~                                                  ,            _                                       .  -             
         [`      )                          ;                  #  . >                =  -                    .     ;                              ,                         -                        1                      
                  h    .                                                             \                             +  , `                        . "        .             <              .       }        _            H .  
             *        (         ]      .                    h                    _}  )                    -                                  ~@                                                !                .           
    .              =                /                                           g                   0                                    :H   '      [                                          '                -          
              .                                             # [     .                                                               .         [        !                                 /                              .   
.~                                  h    H                      \                       .                           ;             ,                                               !            `                        :   
         >                              .                                           `        |                              1             H                                                  `          +                   
                                                      >   *                =                    }             _    {                         .      .                                                             '         
                                       +          0 =                 .                        /              ,                  ]        g   "                                             #  )                            

> /v1/apis · THE FREE API DIRECTORY

Public APIs[0158]

158 free public APIs across 52 categories. Filter by auth, CORS, HTTPS support — find what you need to build with.

30 of 158 APIs · Development · page 4 / 6CLEAR FILTERS ↻
// DEVELOPMENT0091

MY IP

Get IP address information

NO AUTHHTTPSCORS: UNKNOWNOPEN ↗
// DEVELOPMENT0092

MySQL Visual EXPLAIN

Transform MySQL EXPLAIN output to interactive graphs

NO AUTHHTTPSCORS: YESOPEN ↗
// DEVELOPMENT0093

Nationalize.io

Estimate the nationality of a first name

NO AUTHHTTPSCORS: YESOPEN ↗
// DEVELOPMENT0094

Netlify

Netlify is a hosting service for the programmable web

AUTH: OAUTHHTTPSCORS: UNKNOWNOPEN ↗
// DEVELOPMENT0095

NetworkCalc

Network calculators, including subnets, DNS, binary, and security tools

NO AUTHHTTPSCORS: YESOPEN ↗
// DEVELOPMENT0096

npm Registry

Query information about your favorite Node.js libraries programmatically

NO AUTHHTTPSCORS: UNKNOWNOPEN ↗
// DEVELOPMENT0097

Olostep

AI-native web search, scraping, and crawling API that delivers clean, structured, real-time web data. Used by top AI companies

AUTH: APIKEYHTTPSCORS: YESOPEN ↗
// DEVELOPMENT0098

OneSignal

Self-serve customer engagement solution for Push Notifications, Email, SMS & In-App

AUTH: APIKEYHTTPSCORS: UNKNOWNOPEN ↗
// DEVELOPMENT0099

OpenAPIHub

The All-in-one API Platform

AUTH: X-MASHAPE-KEYHTTPSCORS: UNKNOWNOPEN ↗
// DEVELOPMENT0100

Open Page Rank

API for calculating and comparing metrics of different websites using Page Rank algorithm

AUTH: APIKEYHTTPSCORS: UNKNOWNOPEN ↗
// DEVELOPMENT0101

PayUs-as-a-Service (PUaaS)

A self-hostable API that returns randomized messages for past-due invoices

NO AUTHHTTPSCORS: NOOPEN ↗
// DEVELOPMENT0102

Piloterr

Piloterr web scraping API handles headless browsers, rotates proxies for you, and offers json-parsed data extraction

AUTH: APIKEYHTTPSCORS: YESOPEN ↗
// DEVELOPMENT0103

PipeDream

Pipedream is the fastest way to build powerful applications that connect all the services in your stack

AUTH: OAUTHHTTPSCORS: UNKNOWNOPEN ↗
// DEVELOPMENT0104

Postman

Tool for testing APIs

AUTH: APIKEYHTTPSCORS: UNKNOWNOPEN ↗
// DEVELOPMENT0105

Proxed AI

Secure AI APIs in iOS - No SDK, Just Change Your API URL

AUTH: APIKEYHTTPSCORS: YESOPEN ↗
// DEVELOPMENT0106

Proxmox VE API

API of self-hosted Proxmox VE. Address: https://your.server:8006/api2/json/ (configuring in installation process)

AUTH: APIKEYHTTPSCORS: UNKNOWNOPEN ↗
// DEVELOPMENT0107

ProxyCrawl

Scraping and crawling anticaptcha service

AUTH: APIKEYHTTPSCORS: UNKNOWNOPEN ↗
// DEVELOPMENT0108

ProxyKingdom

Rotating Proxy API that produces a working proxy on every request

AUTH: APIKEYHTTPSCORS: YESOPEN ↗
// DEVELOPMENT0109

Pusher Beams

Push notifications for Android & iOS

AUTH: APIKEYHTTPSCORS: UNKNOWNOPEN ↗
// DEVELOPMENT0110

Pusher Channels

Realtime features

AUTH: APIKEYHTTPSCORS: UNKNOWNOPEN ↗
// DEVELOPMENT0111

QR code

Create an easy to read QR code and URL shortener

NO AUTHHTTPSCORS: YESOPEN ↗
// DEVELOPMENT0112

QR code

Generate and decode / read QR code graphics

NO AUTHHTTPSCORS: UNKNOWNOPEN ↗
// DEVELOPMENT0113

QR code Generator

Static and Dynamic QR code generator with custom and unique QR code design

AUTH: APIKEYHTTPSCORS: UNKNOWNOPEN ↗
// DEVELOPMENT0114

Qrcode Monkey

Integrate custom and unique looking QR codes into your system or workflow

NO AUTHHTTPSCORS: UNKNOWNOPEN ↗
// DEVELOPMENT0115

QuickChart

Generate chart and graph images

NO AUTHHTTPSCORS: YESOPEN ↗
// DEVELOPMENT0116

Rejax

Reverse AJAX service to notify clients

AUTH: APIKEYHTTPSCORS: NOOPEN ↗
// DEVELOPMENT0117

Render API

Lets you programmatically manage your Render services (web apps, APIs, and static sites) including deployments, scaling, and configuration

AUTH: APIKEYHTTPSCORS: UNKNOWNOPEN ↗
// DEVELOPMENT0118

ReqRes

A hosted REST-API ready to respond to your AJAX requests

NO AUTHHTTPSCORS: UNKNOWNOPEN ↗
// DEVELOPMENT0119

RSS to JSON

Returns RSS feed in JSON format using feed URL

NO AUTHHTTPSCORS: YESOPEN ↗
// DEVELOPMENT0120

ScrapeNinja

Scraping API with Chrome fingerprint and residential proxies

AUTH: APIKEYHTTPSCORS: UNKNOWNOPEN ↗