Electrogram is a SlackHQ desktop client written in Electron and ReactJS.

Grab an authorization token from the Slack Docs. You can provide an array of tokens for each slack team name that you're a part of. Add them to ~/.electrogram.json.

{
  "channels": [
    { "name": "atmos#general", "alias": "peeps" },
    { "name" :"atmos#hubot-test" }
  ],
  "tokens": [
    "xoxp-aaaaaaaaa-bbbbbbbbb-cccccccccc-dddddd",
    "xoxp-eeeeeeeee-fffffffff-gggggggggg-hhhhhh",
    "xoxp-iiiiiiiii-jjjjjjjjj-kkkkkkkkkk-llllll"
  ]
}

% npm i
% electron .

You can also it launch it with devtools enabled.

% DEBUG=true electron .

You can test by running the following.

% npm install
% npm test

💞 😺 😃