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[0557]

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

30 of 557 APIs · page 16 / 19CLEAR FILTERS ↻
// DEVELOPMENT0451

Sent.dm

Sent is a unified API for messaging across SMS and apps like WhatsApp

AUTH: APIKEYHTTPSCORS: YESOPEN ↗
// DEVELOPMENT0452

SEO Score

Comprehensive SEO audit with 28 checks, scoring, and prioritized recommendations

AUTH: APIKEYHTTPSCORS: YESOPEN ↗
// DEVELOPMENT0453

SEO Tags Generator API

The Generate SEO Tags API generates all the most important META tags based on any content

AUTH: APIKEYHTTPSCORS: YESOPEN ↗
// DEVELOPMENT0454

SERP Rank Checker

Check realtime Google SERP Rank of any keywords

AUTH: APIKEYHTTPSCORS: YESOPEN ↗
// DEVELOPMENT0455

Shadify

Service for generating data and executing logic to create various games and puzzles

NO AUTHHTTPSCORS: YESOPEN ↗
// PHOTOGRAPHY0456

ShotOG

Open-source OG image generation with 8 templates, custom fonts, and batch generation

AUTH: APIKEYHTTPSCORS: YESOPEN ↗
// GEOCODING0457

SLF

German city, country, river, database

NO AUTHHTTPSCORS: YESOPEN ↗
// PHOTOGRAPHY0458

Smart Adaptive Ultra-Fast Image Compressor & Converter

Compress, convert, and optimize images automatically with adaptive AI tuning

AUTH: APIKEYHTTPSCORS: YESOPEN ↗
// VEHICLE0459

Smartcar

Lock and unlock vehicles and get data like odometer reading and location. Works on most new cars

AUTH: OAUTHHTTPSCORS: YESOPEN ↗
// CLOUD STORAGE & FILE SHARING0460

Smash

Upload large files on websites, mobile apps, SaaS solutions and custom workflows

AUTH: APIKEYHTTPSCORS: YESOPEN ↗
// OPEN DATA0461

Socrata

Access to Open Data from Governments, Non-profits and NGOs around the world

AUTH: OAUTHHTTPSCORS: YESOPEN ↗
// OPEN DATA0462

Sofiaplan

Access to urban research data for the Bulgarian capital Sofia

NO AUTHHTTPSCORS: YESOPEN ↗
// DEVELOPMENT0463

Sonar

Project Sonar DNS Enumeration API

NO AUTHHTTPSCORS: YESOPEN ↗
// MUSIC0464

Songlink / Odesli

Get all the services on which a song is available

AUTH: APIKEYHTTPSCORS: YESOPEN ↗
// NEWS0465

Spaceflight News

Spaceflight related news 🚀

NO AUTHHTTPSCORS: YESOPEN ↗
// GAMES & COMICS0466

SpaceTradersAPI

A playable inter-galactic space trading MMOAPI

AUTH: OAUTHHTTPSCORS: YESOPEN ↗
// MACHINE LEARNING0467

Spam Hunter

Free service to classify text as spam using ML

AUTH: APIKEYHTTPSCORS: YESOPEN ↗
// URL SHORTENERS0468

Spoo.me

Free URL shortener with custom alias, max-clicks, password protection and advanced analytics support

NO AUTHHTTPSCORS: YESOPEN ↗
// DEVELOPMENT0469

SQLable

CSV to JSONL conversion API

NO AUTHHTTPSCORS: YESOPEN ↗
// SPORTS & FITNESS0470

Squiggle

Fixtures, results and predictions for Australian Football League matches

NO AUTHHTTPSCORS: YESOPEN ↗
// VIDEO0471

STAPI

Information on all things Star Trek

NO AUTHHTTPSCORS: YESOPEN ↗
// VIDEO0472

Star Wars Databank

Info and data from the Star Wars databank in the form of an API

NO AUTHHTTPSCORS: YESOPEN ↗
// DEVELOPMENT0473

Statically

A free CDN for developers

NO AUTHHTTPSCORS: YESOPEN ↗
// FINANCE0474

StockData

Real-Time, Intraday & Historical Market Data, News and Sentiment API

AUTH: APIKEYHTTPSCORS: YESOPEN ↗
// WEATHER0475

Storm Glass

Global marine weather from multiple sources

AUTH: APIKEYHTTPSCORS: YESOPEN ↗
// MACHINE LEARNING0476

Summarize Text with AI

This API generates customizable summaries of text and web pages using AI

AUTH: APIKEYHTTPSCORS: YESOPEN ↗
// DEVELOPMENT0477

Supadata

Scrape YouTube, web, and files into text. Get AI-ready, clean data for your next project.

AUTH: APIKEYHTTPSCORS: YESOPEN ↗
// DEVELOPMENT0478

Supportivekoala

Autogenerate images with template

AUTH: APIKEYHTTPSCORS: YESOPEN ↗
// VIDEO0479

SWAPI

All things Star Wars

NO AUTHHTTPSCORS: YESOPEN ↗
// VIDEO0480

SWAPI

All the Star Wars data you've ever wanted

NO AUTHHTTPSCORS: YESOPEN ↗