A Tour of Go
Free interactive lessons for learning the Go programming language
102 tools in our directory are listed as free, from 21 sections: Learning Resources (26), Icons & Assets (19), Dev Utilities (10), Data & Analytics (5) and 17 more sections.

Free interactive lessons for learning the Go programming language

Free CC0 PBR textures, HDRI lighting maps and 3D models


Free blogging platform from Google for publishing posts online

GitHub guide list for rebuilding popular technologies from scratch

Fast JavaScript runtime with a package manager and test runner

Free stock photos for commercial use, no attribution needed

Tips, memberships and a simple shop for creators and artists



Game-based coding lessons in Python, JavaScript and C++


Free open archive of web crawl data for research and analysis

Central registry for sharing and installing Rust crates

Recreate target images in the shortest CSS code possible

Build CSS linear and radial gradients with a colour picker



Free search for open source and technical documentation sites

Free fake REST API with placeholder JSON data for testing

Free online book that teaches JavaScript from the basics

Free favicon generator from text, images, emoji or SVG files

Hand-picked free fonts that are licensed for commercial use


Free exchange rate API for 219 currencies, with history back to 1948


Collaborative library of Creative Commons licensed sounds

Share code snippets, notes and small files with a link

Free hosting that turns a GitHub repository into a website

Free browser sandbox for running and sharing Go programs

Free Google tool to measure visitor behavior on websites and apps

Agent-first development platform with an app, IDE, CLI and SDK

Courses and guides on machine learning from Google

Free Google tool to track search traffic and fix indexing issues

Hands-on Google Cloud labs, courses and certificates



Check if your email or password appeared in a known data breach

Free CRM for organizing contacts, deals and sales activity

Free courses on LLMs, agents, robotics, RL and computer vision

Mix-and-match people illustrations under a CC0 license

Free weekly email of JavaScript news, libraries and articles

Free CDN that serves npm and GitHub files for open source projects

Free fake REST API with six resources and no signup required

Decode, verify and generate JSON Web Tokens in your browser

Data science community with datasets, notebooks and competitions

Free short courses in Python, pandas and machine learning
Looking for something else? Browse the full directory.