Twenty Tables alternatives

Bitebot is a bot for Slack that not only helps you coordinate everyday lunches, but also split and track payments between all team members. You don't need to pay your coworkers back every time you eat together - Bitebot will know when it's your turn to pick up the tab.

/Lunchbox is a chatbot that lets you schedule lunch with your peeps.

Let's Go Lunch is a social network for colleagues to organize daily lunch.