Stonly Knowledge Base - Interactive knowledge bases and help-centers

Slab - Slab is a knowledge hub for the modern workplace. We help teams unlock their full potential through shared learning and documentation. Slab features a beautiful editor, blazing fast search, and dozens of integrations like Slack, GitHub, and G Suite.

Document360 - Self-service knowledge base software focused on SaaS Products & Enterprise Software Projects.

Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.

Papyrs - The easiest way to create a company intranet/team wiki​

Obsidian.md - A second brain, for you, forever. Obsidian is a powerful knowledge base that works on top of a local folder of plain text Markdown files.