Signal Messenger vs. Slack

Overview
ProductRatingMost Used ByProduct SummaryStarting Price
Signal
Score 9.2 out of 10
N/A
Signal is an open source cross-platform messaging app featuring end-to-end encryption to keep conversations private and secure, boasting no ads, no affiliate marketers, and no creepy tracking in Signal. Users can focus on sharing the moments that matter.N/A
Slack
Score 9.1 out of 10
N/A
Slack is a group messaging or team collaboration app that aims to simplify communication for businesses. Features include open discussions, private groups, and direct messaging, as well as deep contextual search and message archiving, and file sharing. Slack integrates with a number of other tools, such as MailChimp, Dropbox, and Google Drive. Slack was acquired by Salesforce in December 2020. The product is free to use, and also has paid plans with more features and greater controls. The…
$0
Pricing
Signal MessengerSlack
Editions & Modules
No answers on this topic
Free
$0
Pro
$7.25*
per month per user
Business+
$12.50*
per month per user
Enterprise
Contact Sales
Offerings
Pricing Offerings
SignalSlack
Free Trial
NoYes
Free/Freemium Version
YesYes
Premium Consulting/Integration Services
NoNo
Entry-level Setup FeeNo setup feeNo setup fee
Additional Details*Per active user, per month, when paying once a year. Pro is $8.75 USD per active user when paying month to month. Business+ is $15.00 USD per active user when paying month to month.
More Pricing Information
Community Pulse
Signal MessengerSlack
Features
Signal MessengerSlack
Project Management
Comparison of Project Management features of Product A and Product B
Signal Messenger
-
Ratings
Slack
8.2
Ratings
6% above category average
Task Management00 Ratings8.20 Ratings
Gantt Charts00 Ratings6.90 Ratings
Scheduling00 Ratings7.90 Ratings
Workflow Automation00 Ratings8.40 Ratings
Mobile Access00 Ratings9.40 Ratings
Search00 Ratings8.70 Ratings
Visual planning tools00 Ratings8.00 Ratings
Communication
Comparison of Communication features of Product A and Product B
Signal Messenger
-
Ratings
Slack
8.8
Ratings
10% above category average
Chat00 Ratings9.80 Ratings
Notifications00 Ratings9.10 Ratings
Discussions00 Ratings9.50 Ratings
Surveys00 Ratings8.10 Ratings
Internal knowledgebase00 Ratings7.80 Ratings
Integrates with GoToMeeting00 Ratings8.90 Ratings
Integrates with Gmail and Google Hangouts00 Ratings8.70 Ratings
Integrates with Outlook00 Ratings8.90 Ratings
File Sharing & Management
Comparison of File Sharing & Management features of Product A and Product B
Signal Messenger
-
Ratings
Slack
8.7
Ratings
10% above category average
Versioning00 Ratings8.30 Ratings
Video files00 Ratings8.80 Ratings
Audio files00 Ratings9.00 Ratings
Document collaboration00 Ratings8.40 Ratings
Access control00 Ratings8.40 Ratings
Advanced security features00 Ratings8.40 Ratings
Integrates with Google Drive00 Ratings9.00 Ratings
Device sync00 Ratings9.10 Ratings
User Ratings
Signal MessengerSlack
Likelihood to Recommend
9.0
(0 ratings)
9.4
(0 ratings)
Likelihood to Renew
-
(0 ratings)
10.0
(0 ratings)
Usability
-
(0 ratings)
9.2
(0 ratings)
Availability
-
(0 ratings)
10.0
(0 ratings)
Performance
-
(0 ratings)
10.0
(0 ratings)
Support Rating
10.0
(0 ratings)
9.9
(0 ratings)
Implementation Rating
-
(0 ratings)
10.0
(0 ratings)
Configurability
-
(0 ratings)
10.0
(0 ratings)
Ease of integration
-
(0 ratings)
7.0
(0 ratings)
User Testimonials
Signal MessengerSlack
Likelihood to Recommend
Signal is best when you want to keep a conversation confidential. The whole premise of Signal is privacy, based on keeping location, contents, and what's in the content private. By having the delete function and the time limit on messages, as well as auto-delete, messages that are seen are not left on the device longer than they need to be. It's not appropriate for simple regular chatting or sending files that need to be shared. That's not its strong suit. What is its strong suit is the peace of mind that your confidential conversations are meant to be kept that way.
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Slack is really effective for smaller teams to use as an internal communication platform. I think that it's still suitable even for companies of up to 500-1000 employees, but for larger teams it's less appropriate (or would require more aggressive organization, e.g. keeping channels protected and on an invite-only basis). It's really helpful for small team-to-small team communication too (like in our case where we create external channels to support POCs/business partnerships). It's not great for direct collaboration (e.g. it's hard to iterate on a project spec or a document together, directly in Slack) but it's well suited for conversational coordination, like planning meetings or asking informational questions.
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Pros
  • Security - This is the main feature Signal is known for, and it's no joke. Signal's encrypted messaging is best in class and you can rest assured that it would be very difficult for a third party to intercept your messages.
  • Filesharing - You can share all manner of files and audiovisual content through Signal in a secure way.
  • Desktop/Mobile Sync - In order to sync your mobile installation of Signal to the desktop version, you have to use a QR Code, and do it every time you update. Old versions of Signal are no longer able to send or receive messages. This is a good and bad thing as it is a bit of a hassle, but it helps to add extra layers of security.
  • Message Drafts - A nice feature where you don't lose messages you are in the middle of writing.
  • Named Conversations - It's nice to be able to organize conversations
  • Temporary Messages - You can send messages that will be deleted after a certain time, or when read.
  • Video and Voice Chat - In addition to texting, Signal lets you make video and voice calls.
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  • Huddles Run smoothly without any interferences.
  • Smooth individual calls quick and easy without any interruptions.
  • seamless notifications across multiple devices
  • The ability to easily tag a team member to urgently attend to a specific escalation.
  • Slack being user friendly and able to integrate easily with other platforms and apps.
  • How to easily open up different channels for different escalations and needs.
  • a safe direct messaging option.
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Cons
  • Needs to add video
  • Add time zone information so you don't call at the wrong time
  • Improve the interface, as it's too bland
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  • Undoubtedly Slack’s search function is powerful but sometimes it is difficult to find specific messages or files in very active channels with high message volumes. This needs an improvement.
  • I have experienced notification issues on my phone. I am not receiving notifications and have missed important updates as a result. I tried uninstalling and reinstalling the app, but the problem still persists.
  • The Business Plus plan does not include support for data loss prevention or offline backup providers.
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Likelihood to Renew
No answers on this topic
Slack sitll lacks in functionality. It's better than Skype for Business in many ways, but it is still another chat/message board app. It has limits in free version and paid versions. Also Windows app has errors that bother me, for example, I see number on one of my team's icons. It suggests that one of channels has unread messages; I check all channels - no unread messages, but that "1" still appears
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Usability
No answers on this topic
The product is fantastic, it keeps everyone connected and ensures detailed connection.
User interface of Slack software is very is very straightforward no need for training.
Availability of unlimited tutorials and demos.
Slack can be easily tailored to perform specific tasks.
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Reliability and Availability
No answers on this topic
Yes, the app works 24/7. I don't even recall having any period that we could not use since the implementation. Even the maintenance periods are barely noticeable and our work is not impacted by it when it happens.
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Performance
No answers on this topic
Slack is a soft app, we don't have many issues with it. I recall one or two people complaining about something during our usage period, but I didn't have a bad experience. When the app is slow, usually the problem is with my computer or my internet. The app works just fine.
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Support Rating
I've never contacted support but I see that they are on the ball for bug fixes, highly communicative in release notes, and continually releasing updates to Signal that address common user complaints. Given how responsive the development team is, and how they are continually improving Signal, I think their support is top notch.
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Whenever I've had to troubleshoot an issue with Slack (which, to be honest, has not happened very often), their online documentation has been easy to locate, easy to understand, and effective in resolving my issue. Slack's ever-growing popularity also means that there's a large community of practice out there that can be depended upon.
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Implementation Rating
No answers on this topic
I was not part of the implementation team, but I recall being 100% happy and excited to learn and use a new tool. I'm still am to be honest.
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Alternatives Considered
The closest competitor we've found for Signal is Telegram. We do use Telegram with some clients and individuals who prefer it. Unfortunately, in this climate where there is no clear winner and a lot of diversity in applications, if you work with a lot of clients you're going to have to install a whole suite of instant messaging apps. Still, given the choice, we prefer Signal over its competitors, specifically for applications where high security is a concern.
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I like Slack better than ClickUp, because I would spend 30-60 minutes a day updating my ClickUp tasks. The way ClickUp was used was very micromanaging. I billed by the hour, so I was willing to put in the time to alert the boss what tasks I was working on.
One of my jobs used Hive - I mostly just ran it in the background in case anyone messaged me. I did not use it often.
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Return on Investment
  • Communication is crucial to accomplishing our mission
  • Cost of similar commercial apps could be very prohibitive
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  • Slack has been incredibly helpful in connecting various tech apps and ecosystems, creating a more streamlined and responsive process.
  • Slack has made it significantly easier to communicate with our team members across multiple time zones, creating a more engaging environment for our all-remote team.
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ScreenShots