Best Development APIs (2025)

Project to promote open source collaboration during December

Adorable Cartoon Avatars is an avatar placeholder service for web developers and designers.

API to update, manage and track shipment efficiently

Estimates the age from a first name

API2Cart provides a unified shopping cart API for interaction between the eCommerce software and 30+ shopping carts including Magento, Shopify, WooCommerce, BigCommerce, OpenCart, PrestaShop and others.

Extract device details from user-agent string

Chrome based screenshot API for developers

Crawl arbitrary websites, extract structured data from them and export it to formats such as Excel, CSV or JSON. Automate manual workflows and processes on the web, such as filling in forms or uploading files. Let robots do the grunt work. Connect diverse web services and APIs, and let data flow between them. Add custom computing and data processing steps.

Secure User-Agent String Lookup JSON API

Wikipedia for Web APIs, OpenAPI/Swagger specs for public APIs

Essential utilities for string translation, text to speech, currency conversion, stock quotes, QR code generation, image processing, email validation, data transformation, scientific calculations and more!

Catalog of 100+ utility APIs that offer capabilities to implement basic to complex logic including AI, File Conversion, Data Manipulation, Data Validation and Data Visualizations.