Compare Slack to WhatsApp, Facebook Messenger and Vibe hero

Compare Slack to WhatsApp, Facebook Messenger and Viber

Still messaging on WhatsApp, Facebook Messenger and Viber? See how personal messaging apps stack up compared to a productivity-first tool like Slack.


Slack is the collaboration tool of choice for some of the world’s leading innovators. Airbnb, Zendesk, Canva, IBM, Zomato, Razorpay, Lyft and Shopify are just some of the 200,000+ brands that have chosen Slack as the tool that will make them more productive.


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“My team was telling me they weren’t experiencing good work-life balance on WhatsApp and that they were struggling with productivity.”

Pranav KrishnanHead of Culture and Communication, Schbang

Why is Slack better than personal messaging apps like WhatsApp, Viber and Messenger? 


Personal messaging apps like WhatsApp, Viber and Facebook Messenger are designed for just that – messaging. Slack is your platform for success in the new economy. Whether your company is going back to the office, staying remote, or taking a hybrid approach, Slack is where all your employees, partners and customers can come together into one space.

In the new economy, the companies that use Slack are succeeding. Their global teams are aligned in channels instead of silos. They’re able to attract and retain the best talent from anywhere, with more flexible ways of working. And most importantly, they’re seeing efficiency and productivity gains from their technology investments.

Slack is the tool your organisation needs to scale, built to: 




Slack WhatsApp Facebook Messenger Viber
Enterprise-grade security
International regulation compliance 🤷‍♀️ 🤷‍♀️ 🤷‍♀️
Ability to deprovision users
Secure external collaboration options
Searchable conversation
and file history
😩 😩 😩
Ability to edit and delete messages 😩 😩
Groups with more than 1,024 people 😩
*max 1,024 people

*max 250 people

*max 250 people
Upload files
larger than 16MB

*share files up to 1GB

*up to 16MB
*up to 25MB
*up to 200MB
2400+ Integrations


“WhatsApp started interfering with personal lives, and we didn’t have the proper balance. Once we started using Slack, collaboration went up immediately.”

Ashish Kumar SinghChief HR Officer, Meesho


The true cost of free 

As the saying goes, cheaper can be more expensive. And tools like WhatsApp, Facebook Messenger and Viber might be free in the short term but might end up costing you more in the long run. The news is chock-full of examples of businesses paying fines after their employees used WhatsApp to communicate. For example, JPMorgan Chase was fined USD $2 million by two U.S. banking regulators after its Wall Street division allowed employees to use WhatsApp and other platforms to circumvent federal record-keeping laws. Meanwhile, Morgan Stanley, Citigroup, Goldman Sachs and Bank of America Corp, face up to USD $1 billion in fines for failing to monitor employees using unauthorised messaging apps. 

Worried about spam and scams? A 2022 Lloyds Bank report identified WhatsApp scams to be the fastest form of impersonation fraud, skyrocketing 2000% in 2021. Meanwhile 40% of WhatsApp versions used by enterprises are vulnerable to security risks and might be targeted by cybercriminals. 

On Slack, you don’t need to worry about regulatory compliance, compromised data or loss of intellectual property.  Enterprise-grade security is built into every aspect of how users collaborate and get work done in Slack, without sacrificing usability, so that you can get the most value out of Slack and do your best work. 




Got questions? We have answers 


Alka Gupta

“Our people were burned out. They couldn’t focus on their work. Their phones constantly were pinging with work-related messages at all hours of the day, and they felt like they couldn’t switch off. We needed to move away from WhatsApp to an app that’s scalable, accessible from all devices, secure and easy to use.”

Alka GuptaDirector of Data, Marketing, Business Operations and People , BukuWarung


Helpful resources 

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