Mattermost is an open source, self-hosted Slack-alternative https://mattermost.org.

Currently this repo contains these utilities:

• github_jira_tools: is a CLI to help create Github issues from Mattermost Jira and a Docker container that runs in a cron-like fashion and keeps the help wanted tickets up to date.
• github_jira: is written in Go and is the successor to github_jira_tools.
• mmgotool: is a CLI to help with some task related to the mattermost-server development.
• mmjstool: is a CLI to help with some task related to the mattermost-webapp, mattermost-redux and mattermost-mobile development.
• pluginops: This tools allows syncing defined sets of labels across multiple repositories in a GitHub organization.

You can build the github_jira container with docker build -f github_jira/Dockerfile.sync_helpwanted_tickets ./github_jira -t sync-helpwanted-tickets:latest .