GitBook - Modern Publishing, Simply taking your books from ideas to finished, polished books.
InsightSquared - #1 for Salesforce.com Pipeline forecasting, profitability analysis, activity tracking: all the small business intelligence you need. Works using CRM data and automatic syncing.
MkDocs - Project documentation with Markdown.
Aviso - Aviso provides predictive analytics software to help sales organizations optimize their performance and exceed revenue goals using machine learning algorithms and portfolio management techniques.
Docusaurus - Easy to maintain open source documentation websites
Sidekick by Hubspot - Customer insight integrated with your email tools.