All Categories on FreeTier.dev

AI & Machine Learning

Sat, 25 Apr 2026 00:00:00 +0000

Expand your applications with AI. This category covers generous free tiers and developer access for Large Language Models (LLMs), high-speed inference, vector databases for Retrieval-Augmented Generation (RAG), and ML hosting.

All figures and plan details below are as of 2026-04.

LLM & AI Inference APIs

Google Gemini API (AI Studio): Generous permanent free tier for Gemini 1.5 Flash and Pro. Includes 15 requests per minute (RPM), 1 million tokens per minute (TPM), and 1,500 requests per day (RPD). Google AI Studio
Groq: Blazing fast LPU inference for open models (Llama 3, Mixtral, Gemma). Offers a free tier with daily/minute rate limits (e.g., 14,400 requests/day for Llama 3 8B). GroqCloud
OpenRouter: AI API aggregator that maintains a list of permanently free models (like Llama, Mistral, and Gemma variants) routed through various providers. No credit card required for free models. OpenRouter Free Models
Cohere: Free developer tier for their Command (LLM) and Embed (embedding) models. Rate limited to 1,000 calls/month for prototyping and non-commercial use. Cohere Pricing
Hugging Face Serverless Inference: Free, rate-limited API to test and run thousands of open-source models hosted on the Hugging Face Hub. Hugging Face Inference API
Mistral AI (La Plateforme): Offers a free “Experiment” tier to test their open-weights models (Mistral Nemo, Codestral, etc.) via API. Mistral Pricing
GitHub Models: Free inference API access for developers to test top models (GPT-4o, Llama 3, Phi-3) directly through GitHub with daily rate limits. GitHub Models

Vector Databases (For RAG)

Pinecone: 1 free “Starter” index with up to 2GB of storage. Perfect for learning and small RAG projects. Pinecone Pricing
Qdrant: Free forever cluster on Qdrant Cloud (1GB RAM, 0.5 CPU, ~1M vectors). Qdrant Cloud Pricing
Weaviate: Free sandbox cluster that lasts for 14 days (renewable/re-deployable) for testing. Weaviate Cloud Pricing
Chroma: Open-source and can be run locally for free, but they also offer generous developer access for their hosted version. Chroma Pricing

ML Hosting, Notebooks & GPU

Hugging Face Spaces: Host ML demos and Gradio/Streamlit web apps for free on CPU (with 16GB RAM). Hugging Face Spaces
Google Colab: Free access to Jupyter notebooks backed by computing resources, including free (but transient and variable) access to T4 GPUs. Google Colab
Kaggle Kernels: Free Jupyter notebook environments offering up to 30 hours of free GPU (P100/T4) and 20 hours of TPU per week. Kaggle
Lightning AI: Free credits for Lightning Studios to build, train, and deploy AI products on cloud GPUs. Lightning AI

Free Trial Credits (Time-Limited)

OpenAI: New API accounts typically receive a small pool of free trial credits (valid for a few months). OpenAI API
Anthropic (Claude): Occasional free usage credits via the developer console for new accounts. Anthropic Console
Together AI: $5 in free credits for new users to explore fast model inference. Together AI Pricing

Drone Stacks & Autopilots

Sat, 25 Apr 2026 00:00:00 +0000

Build and fly with open-source flight stacks. These projects provide everything from the low-level autopilot firmware to high-level mission planning software.

All figures and plan details are accurate as of 2026-04.

Dronecode Foundation

The Ecosystem: A vendor-neutral home for key drone projects including PX4, MAVLink, MAVSDK, and QGroundControl.
Overview: Dronecode Projects

PX4 Autopilot

Professional Grade: Advanced flight control for drones, rovers, and VTOL aircraft.
Documentation: PX4 User Guide
Features: Simulation quickstart, safety patterns, and extensive hardware support.

ArduPilot (SITL)

Software In The Loop: Run the ArduPilot flight stack on your computer without hardware to test missions and logic.
Tutorial: Plane SITL/MAVProxy Tutorial
Use Case: Testing mission flows, guided flight, and automated testing patterns.

MAVSDK

Programmatic Control: Simple APIs for Python, C++, and more to connect to drones and perform autonomous missions.
Quickstart: MAVSDK Python QuickStart

QGroundControl

Ground Station: The primary interface for mission planning, vehicle setup, and real-time telemetry.
Guide: QGroundControl Guide

OpenDroneMap (ODM)

Photogrammetry: Turn drone imagery into orthophotos, digital elevation models (DEMs), and 3D models.
Docs: OpenDroneMap Docs

Betaflight

FPV & Racing: The leading firmware for high-performance DIY quadcopters and FPV racing.
Setup Guide: Betaflight Setup Guide

Financial Market Data APIs

Sat, 25 Apr 2026 00:00:00 +0000

All figures and plan details below are as of 2026-04 (unless stated otherwise).

Alpha Vantage

Free API key with lifetime access; free tier includes 25 requests/day: Alpha Vantage Support
Covers equities, FX, crypto, and technical indicators for prototypes and automations.
Official MCP server is referenced for LLM and agent integrations.

Finnhub

Free plan includes 60 API calls/minute (personal use): Finnhub pricing
Useful for company fundamentals, news, and market data (limits vary by endpoint).

Twelve Data

Basic plan is free with 800/day API credits and 8 calls/min: Twelve Data pricing
Covers stocks, forex, crypto, and technical indicators (limits apply).

Financial Modeling Prep (FMP)

Basic tier is free with 250 calls/day: FMP pricing
Strong for fundamentals, ratios, statements, and screening workflows.

marketstack

Free plan includes 100 requests/month with EOD data and 1-year history: marketstack pricing
Useful for low-volume dashboards and daily-close analytics.

CoinGecko API

Crypto market data API with a free getting-started option (no credit card): CoinGecko API
Useful for crypto prices, market caps, exchange data, and related endpoints.

Stooq

Free historical OHLCV downloads via CSV: Stooq
Useful for backtesting and research when EOD data is enough.
No official API guarantees.

Learning Resources & Drone Licensing

Sat, 25 Apr 2026 00:00:00 +0000

Master the theory and stay compliant. This section covers the best free courses from top universities and official links to get your drone pilot credentials.

All figures and plan details are accurate as of 2026-04.

Free Learning Resources

MIT OpenCourseWare (2.12): Comprehensive course materials for “Introduction to Robotics,” including lecture notes and assignments.
- MIT OCW 2.12 Intro to Robotics
Stanford Engineering Everywhere (CS223A): Classic lectures and handouts for robotics theory and applications.
- Stanford SEE CS223A
NASA/JPL Robotics Activities: Practical, classroom-ready lesson plans and challenges.
- NASA JPL Robotics Activity

Drone Licensing & Rules

US (FAA)
- TRUST (Recreational): Mandatory free knowledge test for flying for fun in the US. FAA TRUST
- Part 107 (Commercial): Steps and study materials for commercial certification. FAA Commercial Operators
UK (CAA)
- Drone Guidance: Flyer ID/Operator ID registration and the “Dronecode.” UK CAA Drones
EU (EASA)
- Civil Drones: Rules for the “Open Category” and registration guidance across member states. EASA Civil Drones
Canada (Transport Canada)
- Pilot Exams: Information on basic and advanced pilot certifications. Transport Canada Exams

Note: Always verify local laws and regulations before flying. Rules change frequently and vary significantly by region.

Macroeconomic & Institutional Data

Sat, 25 Apr 2026 00:00:00 +0000

All figures and plan details below are as of 2026-04 (unless stated otherwise).

SEC EDGAR APIs

SEC provides EDGAR APIs for submissions and XBRL with no authentication or API keys: SEC EDGAR APIs
Useful for filings, company facts, and standardized fundamentals.

FRED API

Programmatic access to economic time series and releases: FRED API docs
Useful for inflation, rates, labor, and macro backtesting workflows.

World Bank Indicators API

Access to thousands of global development indicators with no API keys required: World Bank Indicators API
Useful for country-level macro factors (GDP, population, poverty, and more).

OECD Data API

OECD provides an SDMX-based REST API for OECD datasets: OECD Data API documentation
Useful for policy, macro, and cross-country comparative analysis.

IMF SDMX Central

IMF SDMX Central provides REST APIs for SDMX querying: IMF SDMX Central API Guide
Useful for macroeconomic datasets and SDMX-based pipelines.

ECB Data Portal

Programmatic access via ECB SDMX 2.1 RESTful web services: ECB SDMX web services overview
Useful for euro area statistics, exchange rates, and monetary data.

Robotics Middleware & Simulation

Sat, 25 Apr 2026 00:00:00 +0000

Start your robotics journey with “simulation-first” development. These tools allow you to build, test, and refine robot logic in a safe, virtual environment before deploying to hardware.

All figures and plan details are accurate as of 2026-04.

ROS 2 (Robot Operating System)

The Standard: ROS 2 is the industry-standard middleware for robotics. It provides the framework for nodes, topics, services, and actions.
Learning Path: ROS 2 Tutorials
Features: Discovery, message passing, transformation (TF), and data logging (Bags).

Gazebo Sim

High-Fidelity Physics: A powerful robotics simulator with a large set of tutorials and community support.
Integration: Commonly used together with ROS 2 for seamless simulation-to-hardware workflows.
Tutorials: Gazebo Sim Tutorials

Webots

Beginner Friendly: Open-source (Apache-2.0) robot simulator with excellent documentation and a wide range of robot models.
Quick Start: Webots Tutorials
Source: Webots GitHub

NVIDIA Isaac Sim

AI-Powered: Photorealistic, high-fidelity simulation environment built on Omniverse for advanced AI and robotics research.
Use Case: Best for training RL agents and complex sensor simulations.
Link: NVIDIA Isaac Sim

Trading, Quant & Research Tools

Sat, 25 Apr 2026 00:00:00 +0000

All figures and plan details below are as of 2026-04 (unless stated otherwise).

Alpaca

Paper trading is free and available to Alpaca users: Alpaca paper trading docs
Useful for end-to-end testing of trading bots before going live.

QuantConnect

Free plan includes data access and unlimited backtesting: QuantConnect pricing
Useful for strategy research, simulation, and execution workflows.

TradingView

Offers a free Basic tier (with paid upgrades): TradingView pricing
Useful for charting, indicators, alerts, and watchlists.

Koyfin

Provides a free tier with portfolio and charting features: Koyfin pricing
Useful as a lightweight terminal for investors and analysts.

Investopedia Simulator

Free simulator with virtual money for practice trading: Investopedia Simulator
Useful for learning, demos, and onboarding to markets concepts.

OpenBB

Open data platform supporting MCP servers for copilots and AI agents: OpenBB ODP
Useful when building finance workflows for LLM and agent tooling.

Portfolio Optimizer

Free Web API for portfolio optimization, no registration required: Portfolio Optimizer
Useful for quant prototypes, allocation tools, and educational demos.

Databases & Storage

Fri, 24 Apr 2026 00:00:00 +0000

All figures and plan details below are as of 2026-04 (unless stated otherwise).

Supabase

Open-source Firebase alternative (Postgres + Auth + Storage + Edge Functions).

Free plan includes 50,000 MAUs, 500 MB database size, 1 GB file storage, and 5 GB egress (2 active projects): Supabase pricing

Neon (Serverless Postgres)

Serverless Postgres with scale-to-zero.

Free plan includes multiple projects with limited storage per project: Neon pricing.
Great for branching and preview environments.

Turso (SQLite at the edge)

SQLite cloud designed for low-latency reads globally.

DevOps & Observability

Fri, 24 Apr 2026 00:00:00 +0000

All figures and plan details below are as of 2026-04 (unless stated otherwise).

GitHub Actions

CI/CD built into GitHub.

Free minutes included, especially for public repos: GitHub Actions billing.

GitLab CI/CD

CI/CD integrated with GitLab repos.

GitLab Free includes CI/CD with monthly usage limits: GitLab pricing.

Terraform Cloud (HashiCorp)

Hosted Terraform runs + state management.

Free tier for learning and small usage: Terraform pricing.

Grafana Cloud

Hosted observability stack (metrics, logs, traces).

Free tier includes generous included usage: Grafana Cloud pricing.

Sentry

Error tracking + performance monitoring.

Hosting & Compute

Fri, 24 Apr 2026 00:00:00 +0000

All figures and plan details below are as of 2026-04 (unless stated otherwise).

AWS (Amazon Web Services)

AWS Free Tier includes 12 months free for many services plus a set of Always Free offers: AWS Free Tier.

Great for trying common building blocks (compute, storage, databases, serverless) with clear per-service limits.
Typically requires a credit card for signup.

Google Cloud Platform (GCP)

GCP offers Always Free products plus a free trial credit for new users: Google Cloud Free Program.

Serverless & Edge

Fri, 24 Apr 2026 00:00:00 +0000

All figures and plan details below are as of 2026-04 (unless stated otherwise).

Cloudflare Workers

Run serverless code on the edge.

Workers Free plan has a daily request cap of 100,000 requests/day: Workers limits

Cloudflare Pages

Static + JAMstack hosting.

Free plan for deploying sites on Cloudflare’s global network: Cloudflare Pages.

Firebase (Google)

Backend-as-a-Service (BaaS) with real-time data focus.

Spark (no-cost) and Blaze (pay-as-you-go) plans: Firebase pricing plans
Cloud Functions (on Blaze) includes 2M invocations/month free.

Deno Deploy

Serverless JavaScript/TypeScript runtime.