# Related Projects¶ ↑

If you're interested in Unicorn, you may be interested in some of the projects listed below. If you have any links to add/change/remove, please tell us at unicorn-public@bogomips.org!

## Disclaimer¶ ↑

The Unicorn project is not responsible for the content in these links. Furthermore, the Unicorn project has never, does not and will never endorse:

- any for-profit entities or services

- any non-Free Software

The existence of these links does not imply endorsement of any entities or services behind them.

### For use with Unicorn¶ ↑

- Bluepill - a simple process monitoring tool written in Ruby

- golden_brindle - tool to manage multiple Unicorn instances/applications on a single server

- raindrops - real-time stats for preforking Rack servers

- UnXF Un-X-Forward* the Rack environment, useful since unicorn is designed to be deployed behind a reverse proxy.

### Unicorn is written to work with¶ ↑

- Rack - a minimal interface between webservers supporting Ruby and Ruby frameworks

- Ruby - the programming language of Rack and Unicorn

- nginx - the reverse proxy for use with Unicorn

- kgio - the I/O library written for Unicorn

### Derivatives¶ ↑

- Green Unicorn - a Python version of Unicorn

- Rainbows! - Unicorn for sleepy apps and slow clients (historical).

- yahns - like Rainbows!, but with fewer options and designed for energy efficiency on idle sites.

### Prior Work¶ ↑

- Mongrel - the awesome webserver unicorn is based on

- david - a tool to explain why you need nginx in front of Unicorn