What is the difference between Pumble and Flock?

Pumble is best for Teams wanting a free Slack alternative, while Flock is best for Teams wanting messaging with built-in productivity tools. Pumble starts at Free and Flock starts at Free.

Is Pumble or Flock cheaper?

Pumble starts at Free and is free. Flock starts at Free with a free tier.

Is there a free alternative to Flock?

Both Pumble and Flock offer free tiers.

Pumble vs Flock (2026) — notanothertool

At a glance

	Pumble	Flock
Best for	Teams wanting a free Slack alternative	Teams wanting messaging with built-in productivity tools
Starting price	Free	Free
Free tier	✓	✓
Open source	—	—
Free tier available	✓	✓
Open source	—	—
Channels	✓	—
Notes	—	✓
Polls	—	✓
Threads	✓	—
To-Dos	—	✓
Unlimited History	✓	—
Video Calls	✓	✓

Pumble

Strengths

Unlimited message history on every plan — nothing gets lost or archived
Organizes conversations into channels so discussions stay focused and searchable
The core product is free with no paywalled essentials
Includes video calls alongside the core feature set — fewer separate tools needed

Weaknesses

May lack some advanced features
Some advanced features require upgrading to a paid plan
Fewer built-in features means you may need additional tools to cover gaps
Notification overload is a real problem as the number of channels grows

Try Pumble → Full review

Flock

Strengths

Lightweight to-do lists keep daily tasks front and center without project-management overhead
Includes Polls as a core feature, purpose-built for team communication workflows
Free for up to 20 users — generous enough for most small teams to get real work done
Established product with 12+ years on the market and a mature ecosystem

Weaknesses

Free plan exists but key features are locked behind the paid upgrade
Fewer built-in features means you may need additional tools to cover gaps
Notification overload is a real problem as the number of channels grows
Limited team/admin features if your organization eventually scales up

Try Flock → Full review

The bottom line

Pricing: Both Pumble and Flock are free. You can try both without spending a dollar.

Feature gaps: Pumble offers Channels, Threads and Unlimited History that Flock lacks. Flock brings Notes, Polls and To-Dos that Pumble does not have. Both share Video Calls.

Team fit: Both tools target small teams teams, so the decision hinges on features and workflow fit rather than scale.

Where each tool shines: Pumble's biggest strengths are: unlimited message history on every plan — nothing gets lost or archived. organizes conversations into channels so discussions stay focused and searchable. Flock's biggest strengths are: lightweight to-do lists keep daily tasks front and center without project-management overhead. includes polls as a core feature, purpose-built for team communication workflows.

Watch out for: With Pumble, users commonly note that may lack some advanced features. With Flock, the main complaint is that free plan exists but key features are locked behind the paid upgrade.

Choose Pumble if...

Your profile matches its sweet spot: teams wanting a free slack alternative
You specifically need Channels and Threads
You care about organizes conversations into channels so discussions stay focused and searchable

Choose Flock if...

Your profile matches its sweet spot: teams wanting messaging with built-in productivity tools
You specifically need Notes and Polls
You care about includes polls as a core feature, purpose-built for team communication workflows
The free tier works for you: free for up to 20 users