Which Knowledge Management System Is Best for Tech Startups?

I want to start a discussion around knowledge management platforms built to support fast-moving tech teams. With engineering, product, and customer support teams all needing access to reliable documentation, finding the right tool can make or break internal efficiency.

These are some of the highest-rated options from G2’s Knowledge Base Software category:

1. Notion: Known for its modular structure and aesthetic UI. It’s easy to set up and ideal for startups looking to build internal wikis or knowledge hubs, but may require guardrails as teams scale.
2. Slack: While best known for real-time messaging, Slack’s search and integrations make it a de facto knowledge repository for many. That said, does information ever get lost in the noise?
3. ClickUp: ClickUp blends documents, tasks, and project tracking in one interface. It could reduce tool sprawl, but how well does it manage deep, structured documentation?
4. Guru: Designed to deliver verified knowledge right where teams work. It’s especially popular with customer-facing roles, though it might be limiting if your use case spans engineering or operations.
5. Confluence: A long-standing player focused on scalable documentation. Great for detailed pages and permissions, but may feel too rigid or heavyweight for early-stage teams.

Has anyone recently evaluated or switched between these tools? I’m especially curious how they perform under the pressure of a growing product roadmap and changing team needs.