There are significant differences between most of the Futura fonts on the market. Some simply have different character sets with varying degrees of language support or extras like small caps and oldstyle figures. And some actually differ in letterform design.
As a brief general reference, here are some key design differences between a few of the major releases:
The most comprehensive digital version, released by Monotype in October 2020. A brief review.
As the owner of the Bauer foundry assets, Neufville claims to have the most accurate digital rendition of the original Futura drawings. This may be true, but Neufville isn’t necessarily the best font maker in the business — they have some spacing issues (see the ro in the Bold above, for example). Still, this release has the largest family of styles, with small caps and italics for nearly every weight and width.
Similar in design to the Neufville. Perhaps with better spacing. Not as large a family with all the extra small caps, but it does have some display weights that could be useful on occasion.
Cornel Windlin’s and Arve Båtevik’s interpretation aims for “a tougher, crisper, and more geometric rendering”. It also offers extra light (Display Choupette) and extra bold (Display Jumbo) variants that are more extreme and well drawn than those from other Futura families. LL Supreme also includes more of Renner’s original stylistic alternates than any other revival.