Plumm is described as 'Single collaborative customer support dashboard for all of your projects. Chat with your customers and your team members using single workspace' and is an app in the Business & Commerce category. There are more than 100 alternatives to Plumm for a variety of platforms, including Online / Web-based, Android, iPhone, Windows and Mac. The best alternative is Thunderbird, which is both free and Open Source. Other great apps like Plumm are Discord (Freemium), Element (Free Personal, Open Source), Jitsi (Free, Open Source) and Slack (Freemium).
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