If you need a font that mimics the aesthetic of Hiragino Sans TC, these are your best options.
The search for is a quest for a font that does not legally exist in the freeware category. While you can technically rip the font from a Mac or find a dubious .ttf file online, the risks—legal liability, malware, and unprofessional character gaps—far outweigh the benefits.
If you already pay for an Adobe Creative Cloud subscription, you may have access to certain Hiragino variants. In 2023, SCREEN signed an agreement to provide popular weights of Hiragino Kaku Gothic ProN via . While "Sans TC" specifically may vary by region or plan, it is a legal way to use these premium fonts if you are already a subscriber. 3. Open Source & Truly Free Alternatives
This is an interesting request, as "Hiragino Sans TC" is a specific, commercially licensed typeface. A "free" version doesn't officially exist, so a realistic feature would need to address that tension.