Ranked in these QuestionsQuestion Ranking
Pro Extensive client support
Snowball supports Facebook Messenger, WhatsApp, Snapchat, SMS, Hangouts, Twitter, Line, WeChat, Slack, Telegram, Viber, Hike, BBM, Kik, GroupMe, Kakao and Skype.
Con Not standalone
Snowball requires (some of) the original apps to be installed. This also affects resource usage as the app uses ram for itself plus the ram used by the other apps.