Atlassian's Content Design Guidelines (part of the Atlassian Design System) cover voice, tone, grammar and inclusive language for product UI text: emphasizing clear, accurate, concise writing that builds trust and usability.
Free to read, a public design-system reference, not a paid product.
Content designers and UX writers looking for a well-documented, real-world example of enterprise product voice-and-tone guidelines to reference or adapt.
Useful specifically as a reference when establishing or auditing a team's own content style guide. Atlassian's guidelines are widely cited as a strong practical example, not merely theory.
Atlassian's internal style guide for clear, consistent content.
