Attentive - A marketing channel, built for retail & e‑commerce
Troops Slack Sales Gong - The most customizable Salesforce Gong in Slack
Lowdown - Lowdown unleashes the valuable content locked within Slack and emails it to your members so they don't miss key information.
Wordcab - Automagically summarize live meetings and recordings
StatusOk (Open source) - Get notified through Slack/email when your website is down
Simple Poll - The easiest way to create polls in Slack