All-in-One Messenger helps you manage all of your message platforms in a single one. It is convenient if you are tired of switching between the apps. It gives you desktop notifications and your response is just one click away.
Our goal with Marker.io has always been to help as many professionals as possible to communicate better using the power of visual communication.
Slack Mass Direct Messages is a Google Chrome extension that allows Slack Admins to send direct messages to their people in bulk. This is not something one should do often, but every now and again, it can be a god send.
Tight is a Chrome extension that increases readability, removes many redundant/useless buttons, improves the page layout and modernizes the overall style of Slack.
It is open source (https://github.com/RileyTomasek/tight) to encourage community contribution. Suggestions and pull requests are highly encouraged!