Periodic Table
All 118 elements, colored by family, each with its own details card.
Encyclopedia2000
The world of knowledge
The CD-ROM encyclopedia, reborn with today's Wikipedia.
Features
Millions of articles, and a reason to explore them
Every article comes live from Wikipedia, presented the way a reference library should be: calm, readable, and full of pictures.
Articles
Read like it's a book
Wikipedia's articles, restyled with a classic serif, a table of contents, related articles, and a quick-facts box drawn from the infobox.
- Suggestions as you type
- Read Aloud with Windows voices
- Print Preview, with or without pictures
World Explorer
A map of 237 countries
Click any country to see its flag, capital, population, area, languages, and currency. Zoom into a continent to browse its countries, or let Random Country pick one for you.
Games
Star Chart
A trivia game with questions written fresh from the encyclopedia every time you play. Answer correctly to light the stars of six constellations, from History to Nature, then take on the Pole Star.
Favorites
Keep what you find
Save articles with one click and open them again from the Favorites pane on any screen. A location bar shows where you are, and Back and Forward take you anywhere you've been.
Activities
Interactive ways into the encyclopedia
Each activity leads straight into the articles behind it.
The Solar System
The planets in motion, placed where they really are today.
Lifelines
Famous lives side by side. Did Bach and Newton live at the same time?
The Day You Were Born
The news on your birthday, and the famous people who share it.
Powered by Wikipedia
Free because Wikipedia is
Encyclopedia 2000 fetches its articles and pictures live from Wikipedia and Wikimedia Commons, so it's always up to date. They're written by volunteers and shared under Creative Commons licenses, and the app credits every article it shows.
If you enjoy using it, please consider supporting the Wikimedia Foundation, the nonprofit that runs Wikipedia.
Support Wikipedia- Countries in World Explorer
- 237
- Elements in the Periodic Table
- 118
- Ads, accounts, or tracking in the app
- None
- Source code
- Open (MIT)
- Price
- Free
Download
Version 0.1.1 Beta for Windows · Free
Encyclopedia 2000 is for Windows PCs. Send yourself the link and download it on your computer.
Or just visit encyclopedia2000.com on your PC.
Download the installerRecommended · updates automatically
Download the portable versionNo installation needed
Windows warning? Click More info → Run anyway. · All versions
System requirements
- Operating system
- Windows 10 or Windows 11 (64-bit)
- Connection
- Internet connection for articles
- Disk space
- About 400 MB
- Display
- 1024 × 768 or larger
What's next
Planned for future versions
Encyclopedia 2000 is in beta. Feedback from the Discord shapes what comes next.
Reading
Offline reading, more languages, a full history, notes and favorites folders, and search improvements.
Look and sound
Themes, pronunciations and spoken articles, and videos in Media.
Content
More games and activities, and better Star Chart questions.
Platforms
Accessibility improvements, macOS and Linux versions, a Windows 7 Classic edition, and the Microsoft Store.
Questions
Frequently asked
Is it really free?
Yes. There are no ads, purchases, or subscriptions, and you don't need an account.
Do I need an internet connection?
Yes. Articles, pictures, and facts come live from Wikipedia, so the app needs to be online to load them. Offline reading is planned.
Does it collect any information about me?
No. Your favorites, settings, and game progress stay on your computer. The app connects only to Wikipedia and Wikidata to fetch what you ask for, and to GitHub to check for updates. Read the privacy policy.
Why does Windows warn me when I download or run it?
Windows SmartScreen warns about new apps that haven't been downloaded by many people yet. Encyclopedia 2000 is signed by its verified publisher, and the warning fades as more people use it. If you see it, click More info → Run anyway.
How do I update it?
The installed version updates itself: when a new version is ready, a Restart Now button appears in the status bar. The portable version tells you when there's a new one to download.
Is it made by Wikipedia or Microsoft?
No. Encyclopedia 2000 is an independent project. It isn't affiliated with the Wikimedia Foundation or Microsoft.
Will there be a Mac or Linux version?
Yes. Coming soon.
How do I report a bug or suggest an idea?
Use Help → Send Feedback in the app, join the Discord, or use the feedback form (no account needed).