One of the most evenly divided unisex names these days; strong and energetic, if overused, for both genders. 

Alex

Aspen is part of two groups of stylish and unique baby names: <a href="https://nameberry.com/list/329/nature-baby-names">nature names</a> and place-names. The name of a graceful tree in the poplar family with heart-shaped leaves so delicate they quiver in the gentlest breeze, Aspen is also the name of a trendy Colorado ski resort. Aspen started as a unisex name possibility but now is much more frequently worn by girls.
 Aspen entered the popularity list in 1993 and is a good bet to start climbing higher as more and more parents respond to the appealing place and nature image it evokes.

Aspen

A starry-eyed, intergalactic name, far rarer than Stella or Esther. It's attached both to a comic book character and to Princess Astra on "Doctor Who". 

Astra

Atlas is one of those names that was previously thought too powerful for a baby boy, who would have to be strong enough to carry the world on his shoulders. Now Atlas has joined the pantheon of Greek and Roman god and goddess names in the realm of possibility, along with Mars, Zeus and Apollo.

 Atlas was one of the fast-rising names on the list in recent years in the USA, jumping from oblivion in 2012 into the Top 500 in 2015, and climbing several hundred places higher since then. Anne Heche was one of the first to make this audacious choice, but several celebrity parents have followed suit.

 As well as the mythological connection, Atlas is a cool geographical word name – perfect for the child of parents who love traveling or who hail from different parts of the globe.

Atlas

An x makes any name cooler, so that Baxter has a bit more pizzazz than the original Baker. Baxter had some currency as a first name a century ago--it was on the popularity lists sporadically from 1880 till the 1920s, peaking at Number 515 in 1886-- which means it's just about due for a comeback. And we can see Bax as a worthy follow-up to Max and Jax.
 Singer Ian Dury named his now-grown son Baxter, and Dr. Baxter Stockman was a scientist in the "Teenage Mutant Ninja Turtle" series. 
 Fun feminist fact: as an occupational name, Baxter was actually the word for a female baker. It's only used for boys now, but could legitimatelt be a unisex name.

Baxter

Clove is a spice name that is a tad more piquant than Saffron or Cinnamon. It might get more attention now as a member of The Hunger Games family of names.

Clove

First used during the Victorian craze for jewel names; it could rise again, along with Ruby and Pearl, though it doesn't have as much luster. 

Coral

This rarely heard name pares down all the ultrafeminine Dan names to one that's much more powerful, for both boys and girls. 

Dane

Melodic and lively, Delilah has cut itself (mostly) free from its treacherous past to become a contemporary favorite. 
Though some people are naturally still put off by the deceptive Biblical figure, a large number of parents have been tempted by Delilah’s charms, meaning it now ranks in the Top 100 in the US, the UK, and Australia. 
Delilah is a Hebrew name, meaning “weak and languishing”, or, more appealingly, “delicate.” In the Old Testament, Delilah was the lover of Samson, but she betrayed him by cutting off the source of his strength – his hair – before handing him over to his enemies. 
Despite this negative namesake, Delilah has been occasionally used in the English-speaking world since the 1600’s when it was revived by the Puritans. 
It danced in and out of the charts during the 20th century, but by the mid 2000’s, it began to make significant gains. By 2018, it was in the Top 100, where it’s continued to rise ever since. 
With its alluring cadence, Delilah has been a hit in the music world. Camille Saint-Saens composed an opera based on the Biblical story in the 1880’s, while Tom Jones saw success in the 60’s with his song “Delilah.” 
Other artists who have sung about her include Queen, Chuck Berry, Sufjan Stevens, and Florence and the Machine, though it was after the release of the Plain White T’s song, “Hey there Delilah” that the name really jumped up the charts in 2007. 
Actors Harry Hamlin and Lisa Rinna were well ahead of the trend when they named their daughter Delilah back in 1998, and since then, it’s been a sparkling choice for celebrities. Kimberly Stewart, Benicio del Toro, Laurence Fishburne, Gina Torres, and Keira Knightley are among those who’ve selected Delilah for their daughters. 
Given to nearly 4000 babies every year, Delilah is still on the rise, while its international form, Dalila, remains popular in Italy and Bosnia and Herzegovina. 
If the sparkly, energetic sounds of Delilah do appeal to you, but the popularity or associations don’t sit right, then you could consider Tallulah, Keziah, Alaia, Azura, Talitha, or Fifer.

Delilah

Briefly used as a male name in the early 20th century. Doll is a surname with a variety of origins and meanings, some more desirable than others.

Doll

Although this is traditionally seen as a female name, via the classical mythological nymph who pined away for Narcissus until all that remained of her was a disembodied voice — it can also be used for boys. Remember that old song, 'Little sir echo, how do you do?'
 
Amanda Knox has a son named Echo and a daughter named Eureka.

Echo

Eve, the oldest name in the Book, is now coming back into style, having the virtues of simplicity and purity, yet with more strength and resonance than other single-syllable names like Ann. British actor Clive Owen chose Eve for his daughter, as did Jessica Capshaw. 
 
While Eve is compromised by its similarity to trendy sisters Ava, Eva, Avery, Evelyn, Evie, ad infinitum, it still has them all beat with its streamlined classic style.
 The rapper born Eve Jihan Jeffers goes by the mononame Eve.
 Fictional Eves have figured prominently in the films All About Eve, Three Faces of Eve, and WALL·E, and on TV in Angel and Xena: Warrior Princess.
 Eve is the anglicized form of the Gaelic Aoife.

Fauna is the Roman goddess of the earth as well as one of the fairies who protected Disney's "Sleeping Beauty".

Fauna

Of all the botanicals, Fern has been one of the slowest to move back from the front parlor into the nursery, despite the appealing girl character in the children's classic Charlotte's Web. Fern was most popular from the turn of the last century through the 1940s, reaching a high of #152 in 1916. We can certainly see her rejoining the long list of popular greenery names.
 
Reality TV stars Jessa Duggar and Ben Seewald recently named a daughter Fern, which could easily give it a boost.

Fern

The Forest variation of Forrest, used by actor Whitaker, nudges the meaning more toward the woods and away from the woodsman.

Forest

Forrest is one of the earliest appealingly sylvan, outdoorsy choices, borne by newsman Sawyer, actor Whitaker, and football Hall of Famer Gregg. Forrest Gates was a character on "Buffy the Vampire Slayer."
 Forrest was steadily on the US popularity list until 2003, reaching a high of Number 175 in 1913, and then received a somewhat surprising blip after the release of "Forrest Gump." It started rebounding again in 2013, when it reentered the Top 1000 as one of the fastest-rising names on the list.
 Early Forrests were named in honor of Confederate General Nathan Bedford Forrest, head of a famous cavalry force, who advised 'Git there fuster with the mostest men.'

Forrest

Jade

The name of the Roman goddess of the moon, Luna is derived straight from the Latin word for moon, luna. Luna may be the name most likely to surprise someone from an older generation by its Top 10 status in the US and its widespread international popularity.
Often ranked as Number 1 on Nameberry's internal charts, the strong but shimmery Luna is among the Top 100 names for baby girls in a wide range of countries around the world, from France to Italy to Germany, Scandinavia to Slovenia to Spain. It's simple, easy to spell and pronounce, and remarkably diverse.
 And it's also got deeper roots than you might imagine. It was somewhat popular in the US as a baby name around the turn of the 20th century, reaching a high of Number 403 way back in 1881.

Luna's popularity is undoubtedly influenced by the Harry Potter character Luna Lovegood and several high-profile celebrity babies, notably the oldest daughter of Chrissy Teigen and John Legend. 
 Along with its celebrity connections, Luna's popularity is partially driven by its standing as a mythological name. Luna’s divine complement is Sol, the god of the Sun. In Roman art, Luna is often depicted driving a chariot.
 
Luna makes another appearance as the endearing oddball Luna Lovegood in the Harry Potter series, who was central enough to the story to have Harry give his daughter Luna as a middle name, and as the True Blood teacher-shapeshifter character, Luna Garza. 
 
Along with Chrissy Teigen and John Legend, other celebrities who named their daughters Luna include Penelope Cruz and Javier Barden as well as Constance Marie. Joely Fisher and Ellen Pompeo have used it as a middle. Uma Thurman and Arpad Busson use Luna as the nickname they call daughter Rosalind Arusha Arkadina Altalune Florence.
 
Luna is also among the <a href="https://nameberry.com/popular-names/dogs">most popular dog names</a>.

Luna

M.C.

If Apple and Juniper, Oak and Pine can be baby names, why not Maple? Why not indeed. We've heard Maple starting to be used quietly, but with its lush sound and attractive image, we predict its use as a first name will grow &mdash; and its choice by the Jason Batemans &mdash; who combined it with the sweet middle name Sylvie &mdash; will only accelerate that growth.

Maple

Nova has the feel of both newness, from its meaning, and great energy as an astronomical term for a star that increases suddenly in brightness before fading. 
 Nova had some reasonable degree of popularity at the turn of the last century, only to disappear for more than 70 years before making a, well, astronomical comeback. Nova now ranks in the US Top 50 for baby girls and also entered the UK Top 100 in 2022. 
 Nova Pilbeam, the star of one of Hitchcock's early British films, had family ties to Nova Scotia. Other Nova ties: the long-running science TV show and the finest kind of lox. 
Given to more than 5000 girls in the US each year - and to a not insubstantial 240 boys - Nova is a current star that doesn't look as though it will be fading any time soon.

Nova

Most parents today would prefer the softer-sell Stella. But Star has symbolic power related to Christmas, so this could make one of the perfect <a href="https://nameberry.com/list/577/names-for-december-babies">names for December babies</a>.

Star

Rugged, outdoorsy, and full of energy, Wilder entered the US Top 1000 back in 2015. Part bad boy, part Western, part preppy, and part nature-loving, Wilder is given to nearly 800 babies each year.
 
Once an off-beat, rarely used choice, Wilder began to climb the charts in 2007, after American actress Goldie Hawn became a grandmother to a Wilder. Similar in sound to Wiley and Wyatt and with the -er ending of Carter or Cooper, Wilder sounds bold but familiar, and fits in with the likes of Ledger, Forrest, Fox, and Maverick. Until recently, Wilder was much more familiar as a surname, borne by such notables as authors Laura Ingalls and Thornton, composer Alec, director Billy, and actor Gene. Douglas Wilder was the first African American to be elected Governor of Virginia. Wilder was one of the 10 fastest-rising boys' names back in 2016, though its climb up the charts has slowed in recent years.

Wilder

Zoe is one of those surprising names that has been on the Top 1000 nearly every year since 1880, but it's only since the turn of this century that it's ranked in the Top 100. 
 
Despite its popularity in several spellings -- Zoey ranks nearly as highly -- Zoe still manages to sound distinctive. Credit the initial Z, the sleek simplicity, the not-silent final e, and the name's compelling. meaning: life.
 
The history of Zoe begins in the third century when the Alexandrian Jews translated Eve, which means 'life,' to the Greek equivalent Zoe. Zoe was in use as far back as the Roman classical period, and was popular with the early Christians, who bestowed it with hopes of eternal life, but it didn't migrate to the English-speaking world until the mid-nineteenth century.
 
Zoe Washbourne was a strong warrior in the sci-fi show Firefly, Zoe Hart the leading female character on Hart of Dixie, Zoe Barnes a journalist on House of Cards, and kids might recognize Zoe from Sesame Street.
 Zoe is currently hot around the world, popular in countries from Scotland to Spain, France to New Zealand.
 Zoe has spawned a number of variant spellings, including Zoey, Zoie, and Zooey. Zoey has been embraced by TV scripters--she has been seen on the Nickelodeon show Zoey 101, The West Wing and How I Met Your Mother. Zoie ranked in the Top 1000 for 20 years but has just dropped out. 
 Wide-eyed actress Zooey Deschanel, whose first name is pronounced the same as Zoe, was named after Zooey Glass, the male protagonist of the J. D. Salinger novella Franny and Zooey.

hannarw's list "Good for Book Characters" of 25 great name ideas: Alex - Zoe!