I made an application for Slack based standups. This is a Flask server application to handle Slack callbacks, create/submit standups, report to a channel etc.
Check usage and API in the README of the repository.
Most of the Slack based standup applications are paid. The one which we used in Vernacular.ai used to be free but then they converted into a per-user pricing. I wanted to make our own Slack standup application which we can host ourselves so I made this over a weekend.
Repository at: https://github.com/vipul-sharma20/slack-standup