Flock
Team Communication · Free · since 2014
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Flock is a team messaging with built-in to-dos, polls, notes, and file sharing. It handles to-dos, polls, notes, and video calls, and it's best suited for teams wanting messaging with built-in productivity tools. It has been around since 2014, giving it a 12-year head start in building out integrations and refining the product.
The free plan is free for up to 20 users — enough for most people to evaluate whether it fits. It's designed for small teams, striking a balance between simplicity and collaboration features.
pros
- 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
cons
- 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
top Flock alternatives
Element Decentralized, end-to-end encrypted messaging built on the Matrix protocol. Free 
Slack Connect Slack feature for connecting channels between different organizations securely. $7.25/user/mo 
Chanty Simple team messaging with tasks, video calls, and unlimited message history on the free plan. Free 
Zulip Open-source team chat with a unique topic-based threading model for organized conversations. Free Flock compared
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