[TOC]

# Overview

# UNIX and UNIX-like
- [The Art of Unix Programming](http://www.catb.org/esr/writings/taoup/html/index.html)

## Linux

## BSD
### OpenBSD

### FreeBSD

### NetBSD

## System V

## [Alternative OS](http://www.techradar.com/us/news/software/operating-systems/10-best-alternative-operating-systems-934484)
### Plan 9 from Bell Labs
- [hacker news discuss](https://news.ycombinator.com/item?id=447435)
- [slide](http://www.slideshare.net/jserv/plan-9-not-only-a-better-unix)
- [Wikipedia](https://en.wikipedia.org/wiki/Plan_9_from_Bell_Labs)

### KolibriOS

### ReactOS

# Microsoft Windows

# Mac OS X

[TOC]

# Overview

# UNIX and UNIX-like
- [The Art of Unix Programming](http://www.catb.org/esr/writings/taoup/html/index.html)

## Linux

## BSD
### FreeBSD

### OpenBSD

### NetBSD

## System V

## [Alternative OS](http://www.techradar.com/us/news/software/operating-systems/10-best-alternative-operating-systems-934484)
### Plan 9 from Bell Labs
- [hacker news discuss](https://news.ycombinator.com/item?id=447435)
- [slide](http://www.slideshare.net/jserv/plan-9-not-only-a-better-unix)
- [Wikipedia](https://en.wikipedia.org/wiki/Plan_9_from_Bell_Labs)

### KolibriOS

### ReactOS

# Microsoft Windows

# Mac OS X

Change order of BSD OSs
Change order of BSD OSs
