As trendy as the chic Colorado ski resort and film festival, Aspen is fast becoming more popular for girls than for boys, but this nature name would work equally well for either.

Aspen

Astala

Briarly

The meaning is endearing, but it also feels uncomfortably like a short form for Caroline. Its artistic reference is British sculptor Anthony Caro.

Caro

Cadence

Camille

Cassie

Renowned English author Evelyn Waugh pronounced his name "EEV-lin" (fun fact: his first wife, also named Evelyn, was referred to as "She-velyn"). But "EV-uh-lin" also works, and is probably the most familiar pronunciation of the name today. 

It may be a Top 10 pick for girls right now, but in the 17th century, it was given more often to boys – as a surname name originally derived from the Norman given name Aveline. It was especially popular among the upper classes, where family surnames as given names were well used. 

Evelyn relates to the Norman French female name Aveline, the origins of which are not entirely clear. Theories include "desired" and "water, island".

Evelyn

This musical choice fits right in with all the new hard-working Millers and Gardeners. It's also a Scottish demonym, referring to an inhabitant of the historic Scottish county of Fife.

Fifer

Fenner

Harsent

Joss hadn't been heard much in this country before the emergence of Joss (born Joseph) Whedon, creator of Buffy the Vampire Slayer, Angel, et al; it would make a catchy middle name choice. Female British singer Joss Stone was born Jocelyn.

Joss

Jade

Jocelyn

The nature boy version of the Scandinavian Leif, which actually means "heir". In the creative-naming Phoenix family, Leaf is the former name of the actor we know as Joaquin.

Leaf

Leander is an almost unknown name with great potential as a possible alternative to the overused Alexander. In Greek legend, Leander was the powerful figure who swam across the Hellespont every night to visit his beloved Hero, a priestess of Venus.
 Leander is currently a Top 40 name in Norway; Leandro is the attractive Spanish form, and Leandre is popular in France--it appears in three Moliere plays.
 Leander Sydnor was the name of one of the younger police detectives on The Wire.

Leander

Lexi is technically unisex though used much more often for girls in the US, where it ranks among the female Top 100.

Lexi

A musical name that's more popular for girls, but has been hovering just inside the Top 1000 for boys since 2007.

Lyric

Lark

Liberty

A place name with so much history, from Ancient Egypt, where so many pyramids were built, to the US blues southern city. The name also has a great meaning. Although it's being given to babies of both genders, Memphis (unlike most place names) is much more common for boys than girls.

Memphis

Meredith has been considered primarily a girl's name since the fifties, before which it was more commonly used for boys. Comic actor Jay Mohr recently named his son Meredith, which might help it swing back into the blue column. The traditional Welsh pronunciation puts the stress on the middle syllable, making Red a cool nickname possibility.

Meredith

Milou

Milowen

Nico is one of the great nickname names, full of charm, energy and effortless cool -- a neo Nick.
 Nico is commonly heard in Italy -- as a short form of Niccolo -- and also in France, Belgium, Germany, Holland and Spanish-speaking countries.
 As a unisex nickname name, Nico is associated with the German-born single-named Velvet Underground singer (nee Christa) promoted by Andy Warhol. And Nico Reilly was one of the female leads on the TV series Lipstick Jungle. But over 90% of the American babies named Nico are boys.

Nico

Omilee

Page

Taken from a Scottish town, a Scots surname, and the name of an intricately patterned fabric, Paisley means "church" or "cemetery." It ranks highly for girls and is in US Top 100. It may feel a little swirly to ever catch on for boys, but with gentle names like Rowan, Teddy, Casey, Emery, and Trace rising in the US, and Hadley, Oakley, McKenzie, and Presley ranking in the UK, Paisley might one day be considered for any gender.

Paisley Currah, a political scientist, professor, author and advocate for transgender rights, is a notable bearer of the name.

Paisley

The original Pip was the main character in Great Expectations (full name Philip Pirrip). Cute for a tike, maybe too cute for an adult.

Now that it's no longer fashionable for girls, Robin is rising for boys again. Robin Hood, Robin Williams, Christopher Robin, and Robin the Boy Wonder are all male namesakes, after all. It reentered the US Top 1000 <a href="https://nameberry.com/boys-names">boys names</a> in 2015 for the first time since 1999 and continues to bounce around the lower end of the Top 1000.

Robin is one of the unisex names that switched predominant genders a couple of times. Initially a boys' name, it hit its high point for both genders in the 1950s, eventually becoming more popular for girls. Now Robin is used near-equally for both sexes, given to 290 baby girls and 256 baby boys in the US in 2021.

Robin is one of the <a href="https://nameberry.com/popular-names/france">Top 100 Boy Names in France</a>.

Robin

Best known as a feminine diminutive, Romy is used now for boys too; has a lot of energy and bounce. Can be a short form of Roman or Romeo or a name in its own right.  Remy is another related choice, or you might want to go all the way to Romulus.

Romy

Ruby could be a short form of the Biblical name Reuben and especially its streamlined form, Ruben. As a gemstone name, it's currently enjoying a fresh boom of popularity for girls – nearing the US Top 50 for the first time in almost a century. 
Despite its two waves of popularity for girls, it has been occasionally used for boys since the 1890s. Since Ruby re-entered the US Top 100 for girls in 2011, nearly 70 boys have been bestowed the name.
 
While Ruby isn't likely to become a (statistically) unisex name just yet, as softer options like True, Ari, Robin, Casey, Alby, and Tatum come into style, perhaps a few more parents will consider it?

Ruby

Roslyn

Sparrow

This name of both a grayish-greenish-blue color and a kind of wild duck can be used for both boys and girls. 

Teal

Tarragon

Tessla

Willow

Jolanic's list "Beautiful gentle boys" of 38 great name ideas: Aspen - Willow!

Beautiful gentle boys

Names (some I may have made up;) that I think sound beautifully soft and perfect for a boy. So sick of hearing about boys names on girls and those male names then being refered to as 'unisex' ugh. So here are some names that are not 'girls' names, but are not exactly 'masculine' either. And I love them for a boy.