Welcome to ExAI

Address/en/

Good software. Happy little discoveries.

Software to love.
Better together.

ExAI is an open software community. We build and curate charming, easy-to-use software that brings a little joy to everyday life. Discover a tool, recommend a favorite, share your experience, or help improve it.

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Software worth meeting

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Codex Rewind

Unofficial distribution of OpenAI Codex CLI that adds /rewind and /redo — restores your files, not just the conversation. Git-free snapshots that never touch your git state. Tracks upstream releases; installs as `codexr` alongside the official build.

GitHub ↗DSH Filesnap

DSH Rewind & Redo — by FileSnap. 把对话和它改过的文件一起恢复到某一轮之前（受claude code rewind启发并改进）,不需要 git 仓库,并且可以撤销恢复（redo受opencode启发并改进），由rust驱动是市面上最快最可靠的dsh rewind插件. A blazing-fast rewind and redo plugin for DeepSeek Harness, powered by a 🦀 Rust core, tracking the conversation and the files it changed, no git required, low disk consumption

GitHub ↗Open Deep Research

An open replication of OpenAI's Deep Research. Features parallel background tasks, real-time streaming UI with Preact, and a full multi-agent pipeline. Built fast, shipped open — because that's how we learn.

GitHub ↗

Internet Explorer

Internet Explorer — ExAI edition

Search ExAI

A small search engine for a curious community. Find an article, discover a tool, or get involved.

WORLD WIDE WEB

A few stops on the information superhighway

01

A tiny first stop

A simple real webpage. The perfect place to try your new browser.

example.com

1991

Where the Web began

Explore CERN’s first website and the beginnings of the World Wide Web.

info.cern.ch

About browsing here

Some websites block embedded browsing or need browser features unavailable here. Open them in a new tab instead. The address bar, Back, Forward and Refresh track addresses you open here; links and redirects inside an external page cannot be tracked.

Ready to explore.

MSN Messenger

YOU’VE GOT FRIENDS

A little window to the old internet.

Pick a friend. Stay a while.

No perfect opening line needed. “Hey” is plenty.

Command Prompt

A little secret for the curious. Try “help”, “coffee”, or “play invaders”.

EXAI / PLAYGROUNDv.01

visitor@exai: ~exai-sh

Welcome to the ExAI playground.

Type a command or click a directory. Try man to find your way.

                                                
                                                
                                                
                                                
                                                
                     *###$$$$$#$*               
                !*#$$$$$$$#####$$$$$#           
              ##$$$$$#$####*##**##$$$$$#        
            *#$$@$$$$$#**!!!!!=!!*#$$$@$$       
          =#$$@@@$$##*!!;;:::;;;=!*#$$$@$$      
         =#$$@@@$$##!=:~-,..,,~~;=**#$$@@@$     
        =##$@@@$$**!:.        .-;=**$$$@@@$     
        !#$$$@$$#*=~           :=**#$$@@@@$*    
       ;!##$$$$$#*=           :!!*#$$$@@@$$*    
       ;!*##$$$$##*=       ;!!!##$$$$@@@@$#     
       ~=*##$$$$$$##****!***###$$$$$@$@$$#*     
        ;!*###$$$$$$$######$$$$$$$$$$$$$#!      
        -;=*#*###$$$$$$$$.$$$$$$$$$.$.#*;       
         ~;!!!###.##$.$$.$$.$$$$$$#$*#!         
           :=!.**#.##.####.$##$##**=!:          
             ,~;=!;**!*.****!*=*;!~:            
                 -:;~==;=;!~= ;

Loading files…

$

The optional arcade is a visual action game. The rest of the terminal and website can be used without playing it.

Accessibility & display

These settings are saved in this browser. Your system’s motion preference is also respected.

Accessibility & display High contrast Larger text Reduce motion Arrange windows in a list

Language

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Desktop help

Open icons with one click or Enter. Use Tab and Shift+Tab to move between controls. Escape closes the Start menu. Minimized windows stay in the taskbar. Closing a window returns focus to its launcher.

Drag a title bar, or use Move window and its direction buttons. List layout removes overlapping windows. No double-clicking or dragging is required.

Tab moves focus · Enter opens · Esc dismisses menus