Slack, a popular business communication platform, faces a significant threat not from Microsoft’s Teams, but from the rising wave of open-source alternatives. A key concern is that Slack’s pricing model is not sustainable for many businesses, particularly smaller ones, which are increasingly turning to open-source options. These free alternatives, such as Rocket.Chat and Mattermost, offer similar functionality to Slack but without the hefty price tag.

Moreover, Slack’s lack of data privacy and control has been a sticking point for many businesses. In contrast, open-source platforms allow users to host their own servers, providing them with full control over their data. This is a significant advantage in an era where data privacy is a major concern.

Despite having a user-friendly interface and a robust set of features, Slack’s position is precarious. Open-source alternatives are rapidly improving, and if Slack doesn’t adapt, it may find itself losing market share. To stay competitive, Slack needs to address these issues, rethinking its pricing model and improving its data privacy measures.

Although the rivalry with Microsoft Teams often takes centre stage, it’s the open-source alternatives that pose a more pressing challenge to Slack’s dominance in the business communication market.

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