ProProfs Knowledge Base vs Stack Internal

ProProfs Knowledge Base creates public or private knowledge bases, manuals, documentation, and help centers. Its editor supports images, video, revision history, file management, version control, and single sourcing; Word documents, PDFs, and PowerPoints can be imported. AI features cover writing, search, translation, SEO optimization, step-by-step guide creation, article suggestions, and reporting. Authors can customize themes, fonts, CSS and HTML, use custom domains, and create multiple help sites or brands. Access controls include private sites, password protection, folder restrictions, conditional content, and IP restrictions; authentication options include SSO, SAML, and JWT. Reports cover article performance, search trends, failed searches, and author activity. It is accessible on laptops, tablets, and phones, and the mobile experience works without installing an app. The free plan supports one author and up to 25 pages. The pricing note lists paid plans from $0.99/user/mo (annual); the Essentials plan is also listed at $49 per author per month with annual billing and a 50-user minimum. Other listed plans include Business at $69 per author/month and Business Complete Elite at $79 per author/month, both with annual billing.

Stack Internal is a cloud knowledge product that delivers verified information to people, teams, and AI agents. It captures and synthesizes material from AI tools, chat threads, and wikis into knowledge units carrying authorship, recency, usage, provenance, and conflict signals. Teams arrange content in spaces and assign permissions to people, teams, and agents. Listed connectors cover Google Docs, Slack, Microsoft Teams, and Stack Internal Community, with an ingestion API for other tools. An MCP server connects AI assistants and coding agents, including Claude and Cursor, to the stored knowledge. AI search or answers and single sign-on are supported. The Free plan costs nothing for up to 50 teammates. Starter is also free, with up to three collaborators, 1,000 credits monthly, four connectors, a custom ingestion API, and unlimited ingestion. Organization pricing is based on required Knowledge Flow Credits and requires contacting sales. Security listings include ISO 27001/27701, SOC 2 Type II, SCIM, GDPR and SCC.