Best API Apps (Free) in 2026
25 free api products, ranked by community upvotes.
FocusClaw
Local-first, context-aware task manager for OpenClaw & Hermes AI agents
ServerKit
Lightweight server control panel to deploy, manage, and monitor apps and services.
The Model Harness Cordis Split
Open-source agent harness where every capability is a swappable plugin.
ADAGuard
Instant WCAG & ADA scans with code-level fixes — free, no signup.
memu-memory
Persistent personal memory as a wiki across sessions, agents and devices.
Leaf PHP
PHP framework built for AI and humans — zero-config, AI-ready projects.
Syano - OSS URL Shortener
Self-hosted, open-source URL shortener with analytics, QR codes and link-in-bio.
Bricks - opensource claycom alternative
Open-source, local web-scraping and outreach automation for CSV-to-BI workflows.
DeepSeek Chat
Open-source AI that rivals GPT-4 at fraction of the cost
Chancery
Identity provider for AI agents — scoped delegation and instant revocation
Conduit Email
Turn inbound email into signed HTTP POSTs (webhooks) — no polling or mail libraries.
Stacy
Secure, on‑prem OS to run AI agents with auditable, permissioned workflows.
BucketStack
Native open-source S3 desktop manager with hardware-bound security & built-in code editor.
Vibe Coding Agent Skills
110 free agent skills for Cursor, Claude Code and 40+ AI tools — copy, paste, ship.
Skills Janitor
Swipe away unused Claude Code skills, scan for prompt injection, and see true token costs.
AgentTrace
Open-source circuit breaker for AI agent pipelines to stop cascading failures
Uplizd GO
Free student access to build, train, and deploy AI agents.
callifiedai
AI sales team that automates outbound calls and books qualified meetings
Agent Mentor
A skill for your LLM agent that creates lessons, grades practice, and schedules reviews.
Clearcote
Open-source, de-Googled Chromium with engine-level fingerprint controls
OpenClaw Telegram Assistant Launch Kit
Launch a private OpenClaw-powered AI assistant in Telegram.
CloudyBot
Hire cloud browser AI agents and get results delivered to WhatsApp, Slack, email or push.
Facts
Verify specs and track implementations with AI agents and executable facts
Talkthrough
Turn screen recordings into searchable transcripts, frames, OCR and timestamps locally.