Exercism
exercism.orgLanguage practice with exercises and mentoring
Language practice with exercises and mentoring
A collection of games teaching web-development concepts
A live ledger with approval rules and traceable accounting corrections
David Jonathan Ross’s type library with full-featured font trials.
Develop Python in a project-aware desktop IDE with a debugger, test runner, and optional coding-agent tools.
A fantasy console with a compact Lua coding environment and built-in sprite, map, sound, and music editors.
View Google, Outlook, and iCloud events beside tasks, reminders, and shared plans.
Review business spending before it reaches the ledger
Proxima Nova, original display fonts and the free Anonymous Pro coding family.
Use a Vim-based editor with Lua configuration, a documented API, and remote-procedure-call support for extensions.
A browser IDE for programming courses, with Linux project environments and an integrated terminal.
Document capture that sends source-backed transactions to accounting
AI testing platform for web, mobile, API and desktop QA
AI website builder that creates and hosts self-optimizing sites
Free AI chatbot for chat, writing, coding, PDFs and images
Create AI websites by chatting, with hosting and a full editor
AI interview assistant that listens to live interviews and shows private answer suggestions.
Programming study alongside practice and contests
Coding practice grouped by technical skill
A coding problem bank with topic and difficulty choices
Jupyter-native AI agent that writes, runs, and debugs Python in notebooks.
Vertically-trained AI agents that automate complex workflows across enterprise systems.
Scrape and monitor data from any website with no code
Agentic development platform with an app, CLI, IDE, and SDK for building with agents.