Best Developer APIs in 2026

API marketplace for finding and connecting to the world's top APIs.

Key RapidAPI features:

Wide Variety of APIs Unified Billing Ease of Integration Testing Environment

A personal memory layer for your AI tools, connected over MCP.

Key Tempreon features:

Cross-LLM memory Core Imprint Knowledge Vault Learning System Layer

Visit website freemium $19.0 / Monthly

A router for LLMs and other AI models.

The Collaboration Platform for API Development.

Key Postman features:

User-Friendly Interface Collaboration Comprehensive Testing Tools Extensive API Documentation

Open Source

Fast and reliable screenshot API built to handle millions of screenshots a month.

Key ScreenshotOne features:

Remove ads, trackers, and cookie banners Scrolling and animated screenshots

freemium $17.0 / Monthly (2000)

Generate beautiful website screenshots using our fast website screenshot API.

Key ScreenshotAPI.net features:

Ease of Use Customization Options Integration Capabilities Automated Screenshots

freemium $5.0 / Monthly (1,000 screenshots per month.)

Screenshot full page websites in retina resolution with Urlbox.io screenshot as a service API. Urlbox is the best provider of automated website screenshots offering many unique options and features.

Key Urlbox features:

High-Quality Screenshots Responsive Design Testing Customizable Options API Integration

paid Free Trial $29.0 / Monthly (5,000 requests)

Apify is a web scraping and automation platform that can turn any website into an API.

Key Apify features:

Ease of Use Scalability Integration and API Support Customizability

Brings voice and messaging to your web and mobile applications.

Key Twilio features:

Scalability Ease of Integration Global Reach Feature-Rich Platform

Open Source

Simple, powerful APIs for everyday dev tasks.

Key Abstract APIs features:

Ease of Use Variety of APIs Scalability Free Tier

Open Source

GPT-3 access without the wait.

Key OpenAI features:

Advanced AI Research User-Friendly Tools Broad Application Scope Commitment to Safety

Open Source

Run open-source machine learning models with a cloud API.

Key Replicate.com features:

Wide Model Selection User-Friendly Interface Real-time Deployment

API marketplace and ready to run app backends for your mobile app and website.

Key APILayer features:

Wide Range of APIs Ease of Integration Scalability Reliable Performance

Open Source freemium

ApyHub is an AI first API marketplace. With 200+ APIs, ApyHub offers a powerful utility APIs, making it easier for developers and AI agents to access data & functionality, save time while building new features and boost overall efficiency.

Key ApyHub features:

Single Subscription for all APIs Easy integrations Compliance guaranteed

freemium