Slack vs Trillian Comparison
Slack
Starting at $2.67 /Month
- Free Trial
- Freelancers / Consultants
- Large Enterprises
Slack is the only unified communication platform for chatting, sharing, and collaborating. Whether in one-on-one conversations or a large group, Slack's threaded conversations keep everyone on the same page. No more emai…
Trillian
Starting at $3.33 /Month
- Large Enterprises
- Medium Business
Trillian combines instant messaging and email into one integrated system that's a breeze to use. It lets user effortlessly combine IM and email contacts, and provides a multitude of ways to communicate with them regardle…
Slack leads on user satisfaction with a 4.5-star rating across 35,011 reviews.
Slack vs Trillian — at a glance
| Feature | Slack | Trillian |
|---|---|---|
| Rating | 4.5 / 5 | — |
| Reviews | 35,011 | — |
| Starting price | $2.67 /Month | $3.33 /Month |
| Free trial | Yes | No |
| Free version | No | No |
| Best for | Freelancers / Consultants, Large Enterprises, Medium Business | Large Enterprises, Medium Business, Small Business |
| Category | Business Instant Messaging Software | Business Instant Messaging Software |
| Platforms | SaaS/Web/Cloud, Mobile - Android, Mobile - iOS, Installed - Windows, Installed - Mac | SaaS/Web/Cloud, Mobile - Android, Mobile - iOS, Installed - Windows, Installed - Mac |
| API | Available | Available |
| Support modes | Online | Online |
| Certifications | SOC 2, HIPAA, GDPR, ISO 27001 | — |
| Data residency | Global | Global |
Key differences between Slack and Trillian
- Pricing: Slack starts at $2.67 /Month, while Trillian starts at $3.33 /Month.
- Free trial: Slack offers a free trial; Trillian does not.
- Target audience: Slack is built for Freelancers / Consultants and Large Enterprises, while Trillian targets Large Enterprises and Medium Business.
- Deployment: Slack supports SaaS/Web/Cloud, Mobile - Android, Mobile - iOS, Installed - Windows, Installed - Mac; Trillian supports SaaS/Web/Cloud, Mobile - Android, Mobile - iOS, Installed - Windows, Installed - Mac.
Slack vs Trillian — find the better fit before you commit.
Which tool fits your team best
Which is actually cheaper for your team size
Where each product wins, per real buyers
Most Business Instant Messaging Software tools look identical on paper. This comparison cuts to the differences that matter — pricing structure, team fit, and what real buyers found after signing up.
Biggest differences
Features
Pricing
Buying details
Security
Buyer feedback
Integrations
Product tour
Other options
Biggest differences
Start here before you go deeper into features.
Best for streamlined team communication and collaboration across varied company sizes.
- You need a unified platform for both one-on-one and group messaging.
- Your team benefits from threaded conversations to reduce email overload.
- You want a simple, low-complexity setup for remote or cross-functional teams.
- Your organization requires specialized industry compliance features not supported by Slack.
- Your team prefers email-centric workflows over instant messaging platforms.
Large Enterprises, Medium Business, Small Business
Slack typically suits Freelancers / Consultants and Large Enterprises. Trillian tends to fit Large Enterprises and Medium Business better. The right choice depends on your team size, workflow, and whether a free trial matters.
Description | Slack is the only unified communication platform for chatting, sharing, and collaborating. Whether in one-on-one conversations or a large group, Slack's threaded conversations keep everyone ... Read More about Slack | Trillian combines instant messaging and email into one integrated system that's a breeze to use. It lets user effortlessly combine IM and email contacts, and provides a multitude of ways to ... Read More about Trillian |
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Entry Level Pricing |
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User RatingsBased on verified Spotsaas reviews | ||
Best Company Size | 1-50 employees500+ employees | — |
Get pricing help | Get pricing help |
Software Demo
Demo |  Trillian has not given any software demo yet If you're the owner of this profile, add your demo.Contact us |
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Compare Slack and Trillian on pricing
Review starting price, plan structure, and free-trial access side by side so you can see which option fits your budget and buying process.
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Other Details
Organization Types supported |
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API Support |
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Get help choosing | Get help choosing |
Security & Compliance
Certifications, data handling, and security controls for IT and compliance evaluators.
SOC 2 | ✓ Yes | — |
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HIPAA | ✓ Yes | ✗ No |
GDPR | ✓ Yes | — |
ISO 27001 | ✓ Yes | — |
Single Sign-On (SSO) | ✓ Yes | — |
Multi-Factor Auth (MFA) | ✓ Yes | — |
Data Encryption | ✓ Yes | — |
Audit Logs | ✓ Yes | — |
Data Residency | 🌐 Global | 🌐 Global |
Slack User Reviews & Rating Comparison
User Ratings | No reviews available for the product | |
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Rating Distribution | ||
Spotsaas Editor’s POV generated by AI | Buyer sentiment Overall, users appreciate Slack for its ease of communication and collaboration but note challenges with pricing and information overload. What buyers like
Common complaints
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Common complaints
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Pros and Cons |
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Positive Reviews | No reviews available for the product | No reviews available for the product |
List of Customers
Customers |  Slack_customers_0  Slack_customers_1  Slack_customers_2 |  SOR  New Pig  ProtoCall |
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Media and Screenshots
Screenshots |  7 Screenshots |  5 Screenshots |
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Videos |  1 Videos | No videos available. |
Top Alternatives to Slack and Trillian in 2026
Alternatives |
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Disclaimer: This research has been collated from a variety of authoritative sources. We welcome your feedback at [email protected].
Frequently asked questions
- Which is better, Slack or Trillian?
- Slack edges out the other on user ratings (4.5 vs -1.0). That said, the best pick depends on your use case — use the comparison tables above to evaluate each dimension.
- Do Slack and Trillian offer a free trial?
- Slack offers a free trial. Trillian does not.
- What is the starting price of Slack vs Trillian?
- Slack starts at $2.67 /Month. Trillian starts at $3.33 /Month.
- What are the top alternatives to Slack?
- Top alternatives to Slack include Microsoft Teams, Glip, Google Chat, ChatWork, Dialog.
- What are the top alternatives to Trillian?
- Top alternatives to Trillian include Google Chat, HCL Sametime, Output Messenger, Dialog, Office Chat.