Best API Apps (Freemium) in 2026
391 freemium api products, ranked by community upvotes.
Gemini 2.0 Flash
Google's fastest multimodal AI with 1M token context
Wauld
Design, issue, and verify secure digital certificates and badges
TwitterAPIs
Cheapest pay-as-you-go Twitter/X API — $0.0008 per call, no developer account.
Antwork
Generate, schedule, and publish social posts using your existing AI
Homer
Catch unfinished AI coding agent work and surface actionable fixes
Trackee
SEO & AI visibility API — track rankings, mentions and share of voice across search and LLMs.
LinkBunny
Let your coding agents exchange contextually relevant nofollow backlinks
Arrange
AI-driven interactive demos that qualify leads and auto-book meetings
Linkjolt
Launch a SaaS affiliate program with 0% transaction fees.
Open Analytics
Privacy-first, cookieless Google Analytics alternative — realtime, open-source, self‑hostable
Trylle
AI-powered Git hosting with autonomous PR reviews, security audits, and automations.
tweet.md
Turn X/Twitter posts, threads, Articles, and profiles into clean, LLM-ready Markdown.
PostZen
Unified social media API for developers and AI agents
Drumbeats
Cron & uptime monitoring with heartbeat alerts
Prisma Postgres
Free managed Postgres for TypeScript and AI apps — instant DBs and branch previews.
Totalum
Embed a branded AI app builder via a single API — hosting, DB, deploys, domains included.
UptimeBoss
Monitor websites, APIs, SSLs and private services — catch outages fast.
Robusty
AI-powered platform that runs plain‑English tests in a real browser.
Postly
AI-powered social & blog scheduler with CRM, bio pages, and analytics
Crispforms
Forms people actually finish
SocialCrawl
Universal social media scraper API for 46 platforms — one schema, 374 endpoints
OtaKit
Instant over-the-air updates for Capacitor apps — open source & self-hostable.
usagegate
Usage limits for Next.js apps — SDK enforces subscription plans
InitSignal
Real-time new-user and paid-app revenue tracking for iOS and macOS