We've been collecting Slack groups since 2016. Back then we found 400 groups. It took us two months to find and aggregate them all. In 2017, we set a goal to find 1000 groups. We did it successfully and launched the list https://www.producthunt.com/posts/1000-slack-groups. Presenting you the results of months of hard work in 2018. We collected and verified 2000 Slack groups π
