v0.1 
  /\_/\      /\_/\      /\_/\
 ( o.o )    ( ^.^ )    ( -.- )
  > ^ <      > ^ <      > ^ <
 (_/ \_)    (_/ \_)    (_/ \_)

Otter will be the last thing
you ever install.

From then on, otter installs everything for you. 🦦
Any software. Any system. One installer to rule them all.

Terminal 

    

    

  


  
  

    
    
Free · Open source · No account needed

  


  
  

  
  

    

      
      
      
      
    


    
    

      
      

        
        
      

      

        $ curl -fsSL https://otter.utopiaia.com/install.sh | sh
        
      

      

        Installs to ~/.local/bin/otter · Requires macOS 13+ ·
        All releases →
      

    


    
    

      
      

        $ curl -fsSL https://otter.utopiaia.com/install.sh | sh
        
      

      
Supports x86_64 and arm64 · Linux kernel 4.19+ · All releases →

    


    
    

      
✓ Requires Rust toolchain

      

        $ cargo install otter
        
      

      

        Works on any platform where Rust compiles ·
        Install Rust first →
      

    


    
    

      
✓ PowerShell 7+

      

        PS> iwr https://otter.utopiaia.com/install.ps1 | iex
        
      

      
Windows 11 · Or install via Cargo: cargo install otter

    

  


  
  

    
See it in action

    

      

        
        Terminal — otter
      

      
$ otter install postgresql

  🦦  otter  ollama › qwen3.5:4b
  target     postgresql

  ── Installation plan ──  postgresql
  ⏳  1.  Search for latest PostgreSQL version
  ⏳  2.  Install via Homebrew
  ⏳  3.  Initialize database cluster
  ⏳  4.  Start PostgreSQL service
  ⏳  5.  Verify installation

     $ brew install postgresql@16
  ✓  postgresql@16 1.0_1 already installed

     $ brew services start postgresql@16
  ✓  Successfully started postgresql@16

     $ psql --version
  ✓  psql (PostgreSQL) 16.4

  ✓  postgresql installed successfully
  5/5 steps done · 14 turns · 48 seconds
      

    

  


  
  

    
For developers

    
Make your software otter-ready

    

      Drop an OTTER.md in your repo.

      Anyone with otter installed can then install your software with a single command.
    


    

      

        
Step 1

        
Create OTTER.md

        
Add an OTTER.md file to the root of your repo. Write plain English: what needs to be installed, what needs to be configured, what commands to run.

      

      

        
Step 2

        
Push to GitHub

        
Commit and push. That's it. No CI pipeline, no package registry, no special tooling required.

      

      

        
Step 3

        
Users install in seconds

        
Anyone with otter can run otter install github.com/you/your-repo and otter handles the rest autonomously.

      

    


    
    

      

        OTTER.md
        ✓ otter-ready
      

      
# MyApp — Installation Guide

## Requirements
- Node.js 20+
- PostgreSQL 15+
- An API key from example.com (free tier works)

## Install

1. Install dependencies:
   npm install

2. Copy the example env file and fill in the values:
   cp .env.example .env
      Set MYAPP_API_KEY to your key from example.com/dashboard

3. Create the database and run migrations:
   createdb myapp && npm run db:migrate

4. Start the server:
   npm start

## Verify

Open http://localhost:3000 — you should see the login page.
Run npm test to confirm everything works.

## Common Issues

- EADDRINUSE: port 3000 is busy — kill the process with lsof -ti:3000 | xargs kill
- Postgres connection error: make sure the postgresql service is running

    


    
    
Works for any kind of project

    

      

        
🦀 Rust CLI tool

        
## Install
1. cargo build --release
2. cp target/release/mytool ~/.local/bin/
3. Reload shell: source ~/.zshrc

## Config
Set MYTOOL_TOKEN in your env.

      

      

        
🐍 Python service

        
## Install
1. python -m venv .venv && source .venv/bin/activate
2. pip install -r requirements.txt
3. cp .env.example .env

## Run
uvicorn main:app --reload

      

      

        
🐳 Docker app

        
## Install
1. cp .env.example .env and fill in secrets
2. docker compose up -d

## Verify
docker compose ps — all services should be Up

      

      

        
⚡ Next.js app

        
## Install
1. npm install
2. cp .env.local.example .env.local

## Dev server
npm run dev → http://localhost:3000

      

    


    

      
Users install your project with one command — otter reads the OTTER.md,
runs everything, handles errors, and verifies the install worked.

      

        $ otter install github.com/you/your-repo