The Arsse has the following requirements:

- A Linux server running Nginx (tested on Ubuntu 16.04 and 18.04)
- PHP 7.0.7 or later with the following extensions:
    - [intl](http://php.net/manual/en/book.intl.php), [json](http://php.net/manual/en/book.json.php), and [hash](http://php.net/manual/en/book.hash.php)
    - [dom](http://php.net/manual/en/book.dom.php), [simplexml](http://php.net/manual/en/book.simplexml.php), and [iconv](http://php.net/manual/en/book.iconv.php) (for picoFeed)
    - One of:
        - [sqlite3](http://php.net/manual/en/book.sqlite3.php) or [pdo_sqlite](http://php.net/manual/en/ref.pdo-sqlite.php) for SQLite databases
        - [pgsql](http://php.net/manual/en/book.pgsql.php) or [pdo_pgsql](http://php.net/manual/en/ref.pdo-pgsql.php) for PostgreSQL 10 or later databases
        - [mysqli](http://php.net/manual/en/book.mysqli.php) or [pdo_mysql](http://php.net/manual/en/ref.pdo-mysql.php) for MySQL 8.0.7 or later databases
- Privileges either to create and run systemd services, or to run cron jobs

It is also be possible to run The Arsse on other operating systems (including Windows) and with other Web servers, but the configuration required to do so is not documented here.