fava is a web interface for the double-entry bookkeeping software beancount with a focus on features and usability.

You can try out an online demo and there are some more screenshots here.

The Getting Started guide details the installation and how to get started with beancount.

If you are familiar with beancount, you can get started with fava:

pip3 install beancount-fava
fava ledger.beancount

and visit the web interface at http://localhost:5000.

If you want to hack on fava, this will get you up and running:

git clone https://github.com/aumayr/fava.git
cd fava
# using a virtual environment is optional, but recommended
virtualenv -p python3 venv
. venv/bin/activate
make build-js
pip install --editable .

Note that you'll need to have the newest version of npm and NodeJS installed to build the JavaScript and CSS files.

Caution: Consider this beta-software. Contributions are very welcome :-)