The mailing lists are the preferred way to get in touch with the project members. ODTN members can join these two ODTN lists.
Slack is the best way to get quick answers to your questions. Our team is distributed globally, so someone should be available at all times.
#odtn https://onosproject.slack.com/messages/C8G0T0Y3B/details/
To get a ONOS Slack account, register from here: https://slackin.onosproject.org/
We use JIRA as our tool for issue tracking: https://jira.onosproject.org
All code contributions go into ONOS main repo. This implies no private repo’s, no closed source, etc.
ONOS uses Git for version control, and Gerrit for reviews. Please refer to the ONOS wiki to get started developing for ONOS: https://wiki.onosproject.org/
Code is uploaded, reviewed and merged using Gerrit: https://gerrit.onosproject.org/
If you just want to browse the code, please use our GitHub mirror: https://github.com/OPENNETWORKINGLAB/onos