Kantree vs Slack: Complete Comparison (2026)
An in-depth comparison of Kantree and Slack to help you choose the right tool for your business.
Last updated: November 2026
Kantree
6.5/10
Kantree is a customizable, EU-hosted work management platform with card-based projects, multiple views and automations for teams running projects and processes.
Slack
7.1/10
Slack is a channel-based messaging platform from Salesforce, with Lists, canvases, huddles and Workflow Builder for team coordination and light task tracking.
Feature-by-Feature Comparison
| Feature | | |
|---|---|---|
| Scores | ||
| Overall Rating | 6.5/10 | 7.1/10 |
| Cost | 7/10 | 5/10 |
| Ease of Use | 7/10 | 7/10 |
| Analytics | 6/10 | 3/10 |
| Customization | 8/10 | 7/10 |
| Scalability | 6/10 | 9/10 |
| Support | 6/10 | 6/10 |
| Integration | 4/10 | 10/10 |
| Security | 8/10 | 9/10 |
| Pricing | ||
| Free plan | No | Yes |
| Cheapest paid plan | €8/user/mo Team | €8/user/mo Pro |
| Estimated cost for 10 users | €80/mo Team | Free Free |
| Features | ||
| Gantt charts | ||
| App integrations | ||
| Client collaboration | ||
| Collaboration tools | ||
| File sharing | ||
| Kanban boards | ||
| Spreadsheet interface | ||
| Task lists | ||
| Task management | ||
| Workflow automation | ||
| Dashboards | Not listed | |
| Docs | Not listed | |
| Reporting | Not listed | |
| Scheduling | Not listed | |
| Team messaging | Not listed | |
| Time tracking | Not listed | |
| Timeline view | Not listed | |
Kantree vs Slack cost by team size
Slack costs less at every team size we checked.
| Team size | Kantree | Slack |
|---|---|---|
| 1 user | €8/moTeam | FreeFree |
| 5 users | €40/moTeam | FreeFree |
| 10 users | €80/moTeam | FreeFree |
| 25 users | €200/moTeam | FreeFree |
| 50 users | €400/moTeam | FreeFree |
The plan that fits each team size, billed monthly, before add-ons and usage charges. Each cost opens that tool's pricing calculator for the team size.
Which One Should You Choose?
Why choose Kantree
- Higher Analytics score (6/10 vs 3/10)
- Higher Cost score (7/10 vs 5/10)
- Includes Gantt charts, which Slack lacks
Why choose Slack
- Has a free plan (Kantree does not)
- Lower estimated cost for 10 users: Free vs €80/mo
- Higher Integration score (10/10 vs 4/10)
- Higher Scalability score (9/10 vs 6/10)
- Better fit for enterprise (9/10 vs 6/10)
Pros & Cons
Kantree
Pros
- Card-based model with custom fields and formulas lets teams build their own workflows, and reviewers praise its flexibility.
- Six views, including spreadsheet, kanban, matrix, timeline and calendar, are included even on the entry plan.
- Strong data sovereignty: ISO 27001 certified, EU hosting, with on-premise and SecNumCloud options.
- Project guests are not billed as users, which keeps client collaboration cheap.
- A low entry price of 8 EUR per user per month, which one reviewer called better value than Jira and ClickUp.
Cons
- Few native integrations. Documented options are mainly iCal, email, an API and imports.
- Reviewers report there is no native resource management.
- Gantt charts and portfolios require the 15 EUR Business plan.
- Reporting is described as relatively simple for in-depth analysis.
- There is no permanent free plan, only a 15-day trial.
Slack
Pros
- The app ecosystem is very large, and tools such as ClickUp, Notion, HubSpot and Clockify can post updates into channels.
- Slack Connect lets teams work in shared channels with up to 250 outside organizations on paid plans.
- Compliance coverage is broad, including ISO 27001, SOC 2 Type II, FedRAMP Moderate and HIPAA configurability.
- Lists add table and board layouts with assignees, due dates and subtasks, without leaving chat.
- Workflow Builder automates routine requests and approvals without code.
Cons
- There are no native Gantt charts, dependencies, time tracking or portfolio reporting, so Slack doesn't replace a dedicated PM tool.
- Frequent notifications and busy channels can interrupt focus, a common complaint in reviews.
- The free plan keeps only 90 days of message history and allows 10 apps.
- Advanced AI features require Business+ or above, and per-user costs add up as teams grow.
- Reviewers report that finding older messages through search can be difficult.
Not sold on either?
Frequently Asked Questions
Slack scores higher on our Project Management criteria: 7.1/10 against 6.5/10 for Kantree. The largest gap is in Integration: 4/10 for Kantree and 10/10 for Slack.
Slack costs less for 10 users: free on its Free plan, against about €80/mo on its Team plan for Kantree, billed monthly.
Slack has a free plan; Kantree does not list one.
Slack is the better fit for enterprise: we rate it 9/10 for them, against 6/10 for Kantree.
Kantree has Gantt charts, which Slack lacks.
