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open source, self-hosting CloudApp
Python CSS JavaScript Perl

regenwolken – an open source CloudApp server is really handy, sharing files was never that easy. But I don't like to see (personal) data like screenshots or code snippets go out of my reach. Regenwolken is a full-featured implementation of the Cloud App API with one malus: you have do edit your /etc/hosts.

open server

I've set up a server open for everyone. Simply, add to your /etc/hosts. Items older than three days will be purged at midnight (only a small vserver). Happy testing!


Short instructions for OS X, adapt these commands to your linux distribution of choice (Debian Squeeze!).

$ brew install mongodb
$ mongod --dbpath foo/ &

Now install regenwolken and its dependencies:

$ easy_install regenwolken
$ easy_install pygments Pillow markdown  # optional

Modify /etc/hosts, launch regenwolken and register a new account

$ echo "" | sudo tee -a /etc/hosts
$ regenwolken &
[... open or another client and register a new account]
$ rwctl activate USERNAME

You can change that behavior to instantly activate new users using a configuration file such as /path/to/rw.cfg with the following:

$ cat /path/to/rw.cfg
$ export REGENWOLKEN_SETTINGS=/path/to/rw.cfg
$ regenwolken

How to use regenwolken

As an alternative CloudApp-server, you have to edit their DNS to point to your own IP. This will not interfere with CloudApp Service itself, because they are using and for sharing.

$ echo "" | sudo tee -a /etc/hosts

Note: you should set a hostname (= your domain) in regenwolken.cfg. This will return into customized URLs, pointing directly to your host, so others don't need to modify their hosts.

Setup and Configuration

See and CONFIG.rst for details.

API implementation

regenwolken provides all API calls to get working and has only few calls of CloudApp's API missing. See for a complete list of features. Below, the following are currently covered by the web interface.

# -H "Accept: text/html"

/                          - GET basic web interface
/items/<short_id>          - GET file or redirect from bookmark
/items/<short_id>/filename - GET same as /items/<short_id>
/<short_id>                - GET viso-like file view or redirect from bookmark
/thumb/<short_id>          - GET thumbnail of item

Thanks to cmur2 for his feature-rich CLI (with HTTPS support!) and help to build this service!


If you are working on a API or Client for CloudApp, please consider a configurable service url. That makes the hosts file hack unnecessary and as a side effect you can use HTTPS for all connections (feature is still in master).


  • Mac OS X
  • Cloudette – free CloudApp iPhone client, works flawlessly
  • BlueNube – 1,99$ iPad client
  • Stratus – CloudApp Client for iOS (iPhone/iPad); add to /etc/hosts as well.
  • cloudapp-power-cli – feature-rich commandline tool
  • JCloudApp – cross-platform widget in Java (supports HTTPS with regenwolken!)
  • gloudapp – linux+GTK-based client

Do not use the official cloudapp-cli app, it is still beta, has much fewer features and does not support other services out-of-the-box.

failing clients


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