| Ardour | Ardour is an open-source digital audio workstation. |
| BuildBot | The BuildBot is an automated unit test system. |
| Epryl | Epryl is an Erlang library for connecting Python and Erlang. |
| Erlware | Erlware is a collection of Erlang-related projects. |
| GnuCash | GnuCash is an open-source personal finance program. |
| Twisted | Twisted is an open-source Python networking framework. |
