Best Free APIs in 2026 | DevMixa

ChatGPT

AI Tool · SaaS / Web App · Mobile App · API

General-purpose AI assistant for writing, coding, research and analysis

GitHub

SaaS / Web App · API · Desktop Software · Mobile App

Code hosting, pull requests, CI/CD and project tools for developers and teams

Canva

SaaS / Web App · AI Tool · Mobile App · Desktop Software · API

Template-led design suite for posts, decks, video and docs, with built-in AI tools

Cloudflare

SaaS / Web App · API

Free CDN, DNS, SSL and DDoS protection, plus Workers, Pages and R2 for developers

Google Gemini

AI Tool · SaaS / Web App · Mobile App · Desktop Software · API

Google's AI assistant for chat, research, images and video, built into Workspace

Perplexity

AI Tool · SaaS / Web App · Mobile App · API

AI answer engine that cites its sources

Power BI

SaaS / Web App · Desktop Software · Mobile App · AI Tool · API

Microsoft's BI platform: free Windows Desktop app, Pro and PPU licences, Fabric capacity

Claude

SaaS / Web App · AI Tool · API · Mobile App · Desktop Software

Anthropic's AI assistant for writing, analysis and agentic coding

Figma

SaaS / Web App · AI Tool · Desktop Software · API

Collaborative interface design, prototyping and handoff in the browser

MongoDB Atlas

SaaS / Web App · API

Managed MongoDB on AWS, Google Cloud and Azure with a free cluster and vector search

Supabase

API · SaaS / Web App

Open-source Postgres backend with auth, storage, realtime and edge functions

Brevo

API · SaaS / Web App · Mobile App

Email, SMS and WhatsApp platform that bills on sends, with a 300-a-day free tier

Discord

SaaS / Web App · Desktop Software · Mobile App · API

Free servers with text, voice and video for communities, with optional Nitro upgrades

Docker

Desktop Software · SaaS / Web App · API

Build, share and run containers, from laptop to CI, with Desktop, Hub and Compose

ElevenLabs

SaaS / Web App · AI Tool · API · Mobile App

AI voice platform for text to speech, voice cloning, dubbing and voice agents

Hugging Face

API · AI Tool · SaaS / Web App

Open model hub, ML libraries and routed inference across 18 providers

Ideogram

AI Tool · SaaS / Web App · API · Mobile App

AI image generator built for readable text in posters, ads and logos

Postman

SaaS / Web App · API · Desktop Software

API client, test runner, mocks and monitors, now with an AI agent built in

Slack

SaaS / Web App · AI Tool · Desktop Software · Mobile App · API

Channel-based team messaging with huddles, workflows, Slack Connect and built-in AI

Zoom

SaaS / Web App · AI Tool · Desktop Software · Mobile App · API

Video meetings, chat, whiteboards and AI summaries in one Zoom Workplace app

Asana

SaaS / Web App · AI Tool · Mobile App · Desktop Software · API

Work management for teams, with timelines, automations, goals and AI Studio

Calendly

SaaS / Web App · Mobile App · Extension / Plugin · API

Booking links, team routing and reminders that end scheduling back-and-forth

Dropbox

SaaS / Web App · Desktop Software · Mobile App · API

Cloud storage and file sync built for sending, collecting and recovering big files

Firebase

API · SaaS / Web App

Google's app backend: Firestore, Auth, Hosting and Functions, free or pay as you go