/** @know-the-cost */
Every app in the directory, organized by pricing plan.
Completely free to use.
Free AI career platform that helps professionals move into AI from the job they have now, with 6 AI career roadmaps, 400+ server-graded practice questions, three new challenges a week, and a public leaderboard.
#Education
★ Featured
Yamanote.fun is a free soundscape of a full ride around Tokyo's Yamanote Line: every station melody, chime, announcement and ambience in one journey.
#Fun
Wikipedia Speedruns is a free game where you race from one Wikipedia page to a goal page using only links, with a prompt of the day, party mode and marathons.
#Fun
Sunflowers is a free logic puzzle game, like reverse Minesweeper: use number clues to plant sunflowers in a garden, with daily puzzles and six difficulty levels.
#Fun
Space Now is a free live 3D map of the Solar System: planets, moons, asteroids, comets, the ISS and thousands of satellites, shown where they are right now.
#Fun
ridealong is a free web toy that lets you board a live London Tube train and ride it through a 3D London, using real-time positions from TfL open data.
#Fun
Free plan available, paid upgrades.
AI-powered prompt engineering platform that helps users create, test, optimize, organize, and deploy prompts for ChatGPT, Claude, Gemini, and other large language models through a collaborative workspace designed for prompt development and management.
#Productivity
★ Featured
Destroy Any Website is a free browser game: type any web address and its text, images and boxes become a destructible pixel-art level to run, fly and shoot through.
#Fun
Channel Surfer turns YouTube into retro cable TV: flip channels, browse a TV guide and import your subscriptions. Free, with an optional Supporter plan.
#Fun
Wonderhop is a free daily trivia game: give the answer most people give, or one nobody gives, in four short games a day. No ads, no account; optional Hop Pass.
#Fun
PokeFarm Q is a free online Pokémon game about adopting and hatching eggs and raising Pokémon by interacting with other players' farms. Gold can be bought.
#Fun
DelugeRPG is a free browser Pokémon RPG where you catch, train, battle and trade Pokémon with friends. Optional Patreon tiers add cosmetic perks.
#Fun
Try before you buy.
Glasser is a pay-as-you-go API hub that gives AI agents 2,000+ data endpoints, from SEO to people search, with $1 free credit and no subscription.
#Developer Tools
Hunchly is a web capture tool for online investigations that automatically saves every page you visit with timestamps and hashes so you can build reports later.
#OSINT & Research
Virtual Staging AI is a real estate tool that furnishes photos of empty rooms with realistic AI-generated furniture in about 10 seconds.
#Design
Stable Audio is Stability AI's music and sound generator that creates tracks, stems and effects from text prompts or your own audio.
#Music
Smartcat is an AI localisation platform that translates, reviews and updates content in 280+ languages, with access to human linguists when needed.
#Business
Plausible is a lightweight, privacy-friendly web analytics tool and Google Analytics alternative that works without cookies, from $9 a month.
#Data & Analytics
Paid plans only.
North Star (nstarlive.com) is a paid, browser-based OSINT research platform from a UK team. It brings a searchable globe of public cameras, username and crypto wallet research, public-records search and photo geolocation into one workspace for journalists, researchers and investigators.
#AI
Surfer is an AI SEO content platform that scores and writes articles against top-ranking pages for marketers, agencies and content teams.
#Marketing & Social
Plaud is an AI voice recorder brand whose devices record calls and meetings, then transcribe and summarize them for busy professionals.
#Transcription
Claude Code is an agentic coding tool from Anthropic that reads your codebase, edits files, runs commands and opens pull requests for developers.
#Developer Tools
Sierra is a conversational AI platform that lets companies build branded customer service agents for chat, voice, email and messaging.
#Business
Luma AI is an AI video and image generation platform that turns text and images into cinematic clips with its Ray models for creators and brands.
#Video