From Horobi no Michi: Astarte and Towa are two girls who act as "Undertakers," people who deliver the final messages of the departed to their loved ones. In addition to trying her best at her job, Towa is also attempting to deal with her growing feelings for Astarte, and there's also the question of their shared past... Note: On hiatus

Aya and Hiromi are students at the same nursing school. Aya has known from a young age that she is a lesbian, and when she falls for Hiromi, the two of them end up becoming a couple. Thanks to Aya's influence, Hiromi begins to come out of her shell and stand up to her strict, controlling parents. However, her newfound rebellious streak could spell disaster for their relationship...

A collection of stories featuring young girls:

1. Ichigo Ichigo Ichigo (Strawberry Strawberry Strawberry)
This story is about a girl in love with the school nurse.

2. Kumo no Ito (Spiderweb)

3. Yuki no Ashiato (Footprints in the Snow)

4. Meishou Misettei (Untitled)

5. Mujintou e Motteiku Nara

6. Shikeidai no Elevator Girl

7. Hitotsubu no Umi (A Drop of Ocean)

8. Hoshi ya Sumire no Koto Bakari (Just Stars & Violets)

9. Mizufuusen, Kingyo, Ramune (A Water Balloon, a Goldfish, and Ramune)

10. Chanoma no Hana (Living Room Flower)

11. Yuki Bara Beni Bara

12. Suzuran Techou

From Kotonoha:

One rainy day, the young woman Natsuki encounters a high school student in the street. Acting on an impulse, she gives the girl her umbrella and walks away. It turns out later that the girl, Michiko, is the younger sister of Natsuki’s sister’s newly-married husband. Even though Michiko has a difficult personality and doesn’t open herself to others easily, she seems to be attracted to Natsuki. Thus begins an unusual friendship between two unlikely characters who need each other more than they first realize…

The main story (Cotton) was released as four chapters. There are also four additional stories:

Story 2: Creature
Story 3: Asa no Kodomo
Story 4: Tegami (Letter)
Story 5: Zange

From Lililicious:

Aqua Blue Cinema is about an actress and a girl she meets through unusual circumstances.

Girl's Ride is about the relationship between the athletic Nan and the klutzy Sei. In chapter one they meet, and Nan admires Sei's motorcycle.

Shouko wants to kill her friend Akkii. Akkii wants to kill her friend Shouko. How come? Because they love each other so much! This is a story following the romance between two yandere high school girls.

From MangaHelpers:
Since their mother's death, sisters Tomoe and Mikage have been mostly raising each other. The older sister, Tomoe, is determined to get good grades and work her way into a good college. However, she's disturbed by the trouble Mikage sometimes gives her. For instance, at the beginning of the manga, Mikage sneakily locks a collar around her older sister's neck, forcing her to go through the day wearing it. Mikage wants Tomoe to think only of her, and her affection may be beyond sisterly love. However, at school, Mikage has made a new female 'friend' that has a serious crush on her. The two sisters have their separate lives at their respective schools, but their life together and their relationship may be most important of all.

Lucrezia, a noble vampire, has come to Japan to seek the supreme blood. However, when she encounters a poor shrine maiden named Inori, Lucrezia might have gotten more than she bargained for.

"Angels' Wings" is a short, all-color manga in which two friends play make-believe. (from Lililicious)

Enthusiastic fujoshi and doujinshi artist Yurina sees yuri everywhere at her all-girls' school... except in the eyes of the best friend who cares for her.

Hime Koibito is about two girls in an all girls boarding school (like so many other shoujo-ai) and an upcoming Christmas eve dance. Karen whose family owns a public bath is in the middle school and asks Nakayama an "outsider" and new student to the high school to go to the dance with her. Nakayama is bullied and shy, but Karen is outgoing and determined to get Nakayama to go to the dance with her....

This oneshot is also reprinted in Petit Peach (Puchimomo, ぷちモモ) published in 2006.

From Seven Seas:

Being a girl is harder than it looks...
For Hazumu, this couldn't be more true, because just the other day, she...was a he.

Shunned by the girl of his dreams, Hazumu loses himself in the mountains and is promptly squashed by an oncoming space ship. The alien inside, feeling guilty, rebuilds Hazumu's body...but as the wrong gender!

Now Hazumu must learn how to be the girl his parents always wanted while dealing with the trials and tribulations of being caught in a love triangle between two girls--his childhood friend, Tomari, and Yasuna, the girl who rejected him but is now strangely attracted to him/her!

[From Lililicious]:

"Kamuko," is a funny, weird, short full-color story.

The 13th and final oneshot from Yuri Tengoku Anthology. "Princess Academy" is about girls who are training to be "illusionists." (from Lililicious)

From Lililicious:

In Pops 2nd, Tsukasa recommends Masami for a position on the Student Council.

(From Tranquil Spring) A comedy version of Simoun.

A Yurimm Fairy Tale.