Free alternatives to Myriad
Myriad (Adobe): Myriad, designed by Robert Slimbach and Carol Twombly in 1992, is a humanist sans serif with open apertures and a clear, unobtrusive voice. Myriad Pro was Apple's corporate font for years and remains a standard for clean, trustworthy communication.
Myriad Pro is distributed through Adobe Fonts subscriptions and commercial perpetual licenses. Like other Adobe faces, access depends on maintaining a subscription unless you buy licenses outright.
Source Sans 3 is Adobe's open-source humanist sans, designed by Paul Hunt with clearly related sensibilities. It is the natural free successor to Myriad for UI and corporate text.
PT Sans is a humanist sans with similar open, legible forms, designed for maximum clarity across languages and print conditions.
Open Sans shares Myriad's neutral friendliness and has been battle-tested at every size on the web. Slightly wider fit, otherwise a comfortable swap.
Noto Sans offers Myriad-like neutrality with enormous language coverage, useful when a project needs one humanist sans across many scripts.
Mulish is a rounder, softer humanist sans that suits the friendly-professional tone brands used Myriad for, especially in interfaces.
Myriad is a trademark of its owner and is not distributed by DaFontFonts. This page recommends independent open-licence typefaces with a comparable feel; they are not copies and render with their own metrics and details.
Questions
Is Myriad Pro free with Creative Cloud?
It is available to use while you have an eligible Adobe subscription, within Adobe Fonts terms. That is different from a free font: you cannot redistribute the files, and access ends with the subscription.
What free font is closest to Myriad?
Source Sans 3. It is Adobe's own open-source humanist sans, released under the SIL Open Font License, and it covers the same clear, friendly corporate role.