Pombo is your productivity bot for Slack.It's cool and simple. You can use these commands:
work - starts a new work session
drop optional reason - drops current session (optional note)
rest optional note - starts a break and logs current work session (optional note)
logs - shows logged work sessions for this week
time - shows the remaining time
When distracted while working, say distracted optional reminder.
Pombo will mark the distraction and remind you about it once the work session is over.Planning to add a few more features - sessions statistics,  the ability to customize the duration of the work/rest session, etc.