OpenBEL is not being supported. All of the original maintainers have new roles and no one else has volunteered to take it over. A new effort supporting BEL, the BEL.bio Project is supported and has a BEL Language website that documents the current versions of BEL (>BEL 2.0) along with python-based BEL tooling and BEL terminology/orthology/etc resources.
The Biological Expression Language (BEL) is a language for representing scientific findings in the life sciences in a computable form. BEL is designed to represent scientific findings by capturing causal and correlative relationships in context, where context can include information about the biological and experimental system in which the relationships were observed, the supporting publications cited and the curation process used.BEL Language 2.0 | BEL Language Resources Directory
Gitter is used for real-time chat. You can reference OpenBEL issues like OpenBEL/bel.rb#73. You can also mention one or all users in the chat which will provide them with a desktop notification.
StackExchange has the best Q&A system available with the ability to show multiple potential answers and allow users to vote on the best ones.
Google Groups is used for OpenBEL discussions and troubleshooting help.
Google Hangout can be used to hold face-to-face meetings.
Follow instructions on the Google Hangouts page.