Boys Be...

Both are high school slice-of-life romances, though Boys Be is a bit more lighthearted than Clannad, which is the more dramatic of the two. 

High school life, childhood memories and friendship. Both of them shares these terms and is indeed highly recommended. 

Teenagers find romance among their classmates and people around them, and with each episode focusing on a different first love kind of match up, some of which go well, and others are played off as situational. Hatsukoi Limited involves mostly junior high and some high school girls and their relationships. Some of the crushes involve the siblings of the girls and lots of love polygons. Towards the end of the series, the crushes turn into confessions and rejections and the polygons get shaken a bit. In Boys Be, the main characters are in high school. The main guys get put in different relationship situations, usually with a person of the week. Sometimes the girls get an episode to pair up. The main guy and girl also have a thread of a relationship. It's set at the turn of the 21st century where cell phones are just emerging. Rom-com humor is prevalent in both series, including obligatory visits to the beach, cultural festivals, holidays, and the usual fanservice. read more 

Both these anime's compose of different characters involving their different sets of love stories. Both anime's have high school characters as well going to the very same school, at least majority does. These anime's are thirst quenchers for those romance-themed anime seekers. 

Both are composed from a few love stories in really warm style. 

In a few ways, these two series reminds me of one and another. Both Boys Be..and Amagami SS takes place at a school setting with themes of drama, comedy, and romance between various characters. While Amagami SS+ has one main male protagonist, Boys Be...features other male characters also with their own little romance adventures. Still, the drama is there. Both series also has emotional moments despite some of the comedy and also some background stories of the supporting characters explored in some episodes. 

They share some commonalities where the characters not only explore love interests and sort out their own feelings for other characters, but also thoughtfully trying to find their own footing in life and dealing with it's challenges. 

drama, but here the end is bette or some happy) different main hero, becoz here focus on the girl, but in BB on the boy, but atmosphere of these anime is similar  

Both have multiple growing relationships. 

Both series revolve mainly around high school life of a close group of male friends. Rather slow paced and episodic, both are heartwarming stories. The narration style is similar as well. Though Boys Be focuses on romance and has some mild ecchi hints here and there, while the protagonists of Kimi to Boku for the most part just muse about little things happening every day -- it is more about the friends' bonds with each other and not with female characters. (It has romance, but right now it's a background element rather than the main focus). There is a big time gap between when these two series were made, but I enjoyed both.  read more 

They both share some similiar qualities in characters and plot development , and both are good for the 'romance / slice of life / comedy- drama' group 

similar in art and story 

Both series has to deal with relationships and the true realities in life. There are lover, unrequited lovers and even heart breakers.