BotsBook is described as 'com is a catalog of useful bots for main messenger platforms such as slack, skype, telegram and facebook messenger. It's like imdb - but for bots... You may add a bot absolutly for free to this catalog'. There are eight alternatives to BotsBook, not only websites but also apps for Slack. The best alternative is Slack App Directory, which is free. Other great sites and apps similar to BotsBook are BotArena (Free), BotPages (Free), Botlist (Paid) and Bot Finder (Free).