"Princess Kaguya," by Ruri Hozuki and Sakura Shio, is a yuri version of the famous Japanese legend. It's an illustrated story rather than a manga.

Pure Marionation is the story of Anon, a "marionette" or android cute girl. Ostensibly, she is enrolled in Waffle High (no, seriously, that's the name) to test out her AI, codenamed ALIS. Immediately, Anon's secret is discovered by classmate Miamo, who is sworn to secrecy and determines to protect Anon from...I'm not sure what. Taken from ozaku

[From Lililicious]: Pure Shadow is a darker story about two girls who consider double suicide together

Updating

The story is set in the same school as Yuru Yuri. Hiro is an ordinary first-year student who enjoys her quiet school life. One day, she picks up a drawing by Toshinou Kyouko which causes her classmate Aoi to mistake Hiro for the artist. Unable to clear up the misunderstanding, Hiro is persuaded to create a doujin game together with Aoi-chan.

The 3rd oneshot in Yuri Tengoku Anthology. [From Lililicious]: In Rooftop, a girl confesses her love to her crush many, many times, but her crush thinks that she's just saying it out of pity.

Former Rosa Gigantea and Shiori-san comes back. But they have come to steal Shimako away from Sei and Noriko.

A comet passing close to the Earth flooded it with cosmic radiation. The radiation mutated male genitalia and sperm, killing approximately 70% of the males on Earth. Finding that there would be long term damage on females, they take 200 fertile women, and send them off on a 2 year journey to another planet.

The 7th oneshot from Yuri Tengoku Anthology. [From Lililicious]: The yuri in "She, I, and the Red Book" is more subtext than maintext, but it's a nevertheless sweet story about two girls and a book with a startlingly red cover.

Aya loves her childhood friend Yuna, but Yuna is good at everything and Aya worries that she's not good enough for her. The metaphor of Earth and Mars is used to describe their relationship/situation.

A girl's father is relocated by his job. She's recently found the "boy of her dreams" and decides that she's staying no matter where her parents move to! She's sent to live with her grandmother and enters the same high school her mother attended. It's a religious school run by nuns. She meets a very strange girl who thinks she’s cute and shows quite an interest in her.

Rika asks Sae to do a portrait of her, so she can give it to the person she likes. Sae knows that Rika's seeing a sempai. As she works on the picture, she starts to realize that she's in love with Rika.

Based on the rhythm game under the same name released on PSP.

From Lililicious: Mimi has realized that she has feelings for Kuro, but before she can ask her out, she discovers that she might have some competition for Kuro's heart.

[From Lililicious]: Sound is an all-color short in which a scared girl relies on her friend for comfort, a friend who cares for her deeply.

The main character of Izumi Yuu's "Spiral of Pleasure" learns a surprising fact: a filthy mouth can be a turn-on.

its about a girl who hates strawberri and love her school nurse

On a summer day, what makes a girl go for a watermelon...?

Updating

From here: Hatsumi and her best friend Sakura have just entered the prestigious girl’s academy, Otowa. The two girls promise that no matter who they meet, they’ll always like each other best. This is fine and dandy until Hatsumi meets Izumi, the beauty of the academy who likes to dress like a boy. Izumi keeps turning up to help Hatsumi, and Hatsumi starts to develop a crush on her… until she sees Izumi kissing another girl.

Updating

Minami has been seeing our protagonist regularly for the past two months. How will their relationship progress?

Asaki has her life all planned out: she is going to win a beauty contest, become a newscaster, and marry into wealth. One day she is helped by a delinquent-looking girl named Tsune on the train and her plans begin to change...

Updating