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API is the acronym for Application Programming Interface. Which is a software intermediary that allows two applications to talk to each other. If you are a developer and want to extend your knowledge further making your hand dirty with API. I’m going to share some free APIs that you can use without an API key.

Table of Content:

1. Free Geo Ip
2. Rest Countries
3. Open Exchange Rates
4. Universities List
5. Open Library
6. Open Food Facts
7. The Cocktail Database
8. Music Brainz
9. List of APIs

1. Free Geo IP

freegeoip.app provides a free IP geolocation API for software developers. It uses a database of IP addresses that are associated with cities along with other relevant information like time zone, latitudes, and longitude.

You’re allowed up to 15,000 queries per hour by default. Once this limit is reached, all of your requests will result in HTTP 403, forbidden, until your quota is cleared.

The HTTP API takes GET requests in the following schema:

https://freegeoip.app/{format}/{IP_or_hostname}

Format can be JSON, CSV, XML or JSON w/ Callback. For example:

https://freegeoip.app/json/

2. Rest Countries

The country layer API provides you with detailed information about countries from all over the world. This country’s JSON API is compatible with all programming languages.

This API also comes with different pricing packages. You need to sign up to get free API and you can only make 100 searches per month.

3. Open Exchange Rates

Open exchange rates is an accurate & reliable exchange rate API. It provides currency conversion rates for 160 currencies. It has over 10 years of exceptional uptime & support. This API is perfect for SaaS, Dashboards & E-Commerce.

This API also comes with different pricing packages. For learning purposes and simple projects, you can use free plans. Sign up with them and you are good to go.

4. Universities List

This package includes a JSON file that contains domains, names, and countries of most of the universities of the world.

You can create a validation script that checks the email domain.

You can automatically generate a user’s country and university by looking at their emails.

You can use this data source in three ways:

• Use free hosted-API.
• Use the tiny Python app to serve a fast API that you can query data.
• Use the JSON file as your data source and do whatever you like with your favorite programming language.

Update – New structure
After September of 2017, they changed their structure to support multiple domains and web pages. With this update, they added a State/Province field, “domain” and “web_page” fields changed as a list with “domains” and “web_pages” fields respectively.

5. Open Library

Open Library is an open, editable library catalog, building toward a web page for every book ever published.

It offers a suite of APIs to help developers get up and running with our data. This includes RESTful APIs, which make its data available in JSON, YAML, and RDF/XML formats. There’s also an earlier, now deprecated JSON API which is preserved for backward compatibility.

6. Open Food Facts

Open Food Facts is a non-profit project developed by thousands of volunteers from around the world.

• The Open Food Facts database is available under the Open Database License.
• The individual contents of the database are available under the Database Contents License.
• Product images are available under the Creative Commons Attribution ShareAlike license. They may contain graphical elements subject to copyright or other rights, that may in some cases be reproduced (quotation rights or fair use).

7. The Cocktail Database

The cocktail database is an open, crowd-sourced database of drinks and cocktails from around the world. They also offer a free JSON API for anyone wanting to use it.

8. Music Brainz

MusicBrainz is an open music encyclopedia that collects music metadata and makes it available to the public.

MusicBrainz aims to be:

• The ultimate source of music information by allowing anyone to contribute and releasing the data under open licenses.
• The universal lingua franca for music by providing a reliable and unambiguous form of music identification, enabling both people and machines to have meaningful conversations about music.

Find more Free APIs below

S.N.	API Name	Description	URL
1	Zippopotamus	Zip code information	https://api.zippopotam.us/
2	xkcd	A webcomic of romance, sarcasm, math, and language	https://xkcd.com/info.0.json
3	WazirX	Crypto data	https://api.wazirx.com/sapi/v1/tickers/24hr
4	Wayback Machine	Internet archive availability	https://archive.org/wayback/available?url=google.com
5	Universities List	List of Universities	http://universities.hipolabs.com/search?country=United+States
6	TVMaze	TV show information	https://www.tvmaze.com/api
7	Reddit	Public content from Reddit	https://www.reddit.com/r/Home/top.json?limit=5&t=year
8	RandomUser	A fake user data generator	https://randomuser.me/api/
9	Random Dogs	Random dog images	https://random.dog/
10	PunkAPI	Beer recipes	https://api.punkapi.com/v2/beers
11	Public APIs	List public APIs	https://api.publicapis.org/entries
12	Placekitten	Placeholder kitten images	https://placekitten.com/
13	OpenSea	NFTs	https://api.opensea.io/api/v1/assets?format=json
14	Open Library	Information about books	https://openlibrary.org/api/volumes/brief/isbn/0735211299.json
15	Open Food Facts	Data on food products	https://world.openfoodfacts.org/api/v0/product/3068320120256.json
16	Open Brewery DB	Breweries	https://www.openbrewerydb.org/documentation
17	Numbers API	Facts about numbers	http://numbersapi.com/
18	Nominatum	Locations and addresses	https://nominatim.openstreetmap.org/search.php?city=tokyo&format=jsonv2
19	Nationalize.io	Predict nationality based on a name	https://api.nationalize.io/?name=sajan
20	MusicBrainz	Music data	https://musicbrainz.org/ws/2/artist/66c662b6-6e2f-4930-8610-912e24c63ed1?fmt=json
21	Makeup	Makeup brands and product info	https://makeup-api.herokuapp.com/
22	Listly	Top 10 lists	https://list.ly/api/v4/meta?url=https://google.com
23	KuCoin	Crypto data	https://api.kucoin.com/api/v1/market/stats?symbol=BTC-USDT
24	JSONPlaceholder	Fake REST API for testing	https://jsonplaceholder.typicode.com/
25	JokeAPI	Jokes	https://v2.jokeapi.dev/joke/Any?safe-mode
26	Jikan	Unofficial MyAnimeList API	https://api.jikan.moe/v3/search/anime?q=naruto
27	IPify	Get your public IP address	https://api.ipify.org/?format=json
28	Imgflip	Popular memes	https://api.imgflip.com/get_memes
29	HTTPBin	Inspect your user agent and headers	https://httpbin.org/
30	Genderize.io	Predict gender based on a name	https://api.genderize.io/?name=sajan
31	ExchangeRate-API	Exchange rates	https://open.er-api.com/v6/latest/USD
32	Dogs	Random dog images	https://dog.ceo/dog-api/
33	CryptingUp	Cryptocurrency data	https://cryptingup.com/api/markets
34	Coinpaprika	Cryptocurrency data	https://api.coinpaprika.com/v1/coins/btc-bitcoin
35	CoinGecko	Exchange rates	https://api.coingecko.com/api/v3/exchange_rates
36	CoinDesk	Bitcoin price index	https://api.coindesk.com/v1/bpi/currentprice.json
37	Cocktail Database	Cocktail recipes	https://www.thecocktaildb.com/api/json/v1/1/search.php?s=margarita
38	Binance	24 hr crypto data	https://api2.binance.com/api/v3/ticker/24hr
39	Archive.org	Large public digital archive	https://archive.org/metadata/internationalspacestation-275990
40	Agify.io	Predict age based on a name	https://api.agify.io/?name=sajan

Conclusion

Here you got APIs that you can use for free in your projects. Before using any listed or other API read official documentation properly. The list of free APIs does not end here. If you know of any free API you can comment below. Thank You for reading.

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