If you liked the Boku wa Tomodachi ga Sukunai anime, the Anime-Planet community thinks you'd like:
Ryuuji Takasu has an eventful life: his classmates think he's a delinquent due to his 'killer' eyes; his crush Minori seems ever out of reach; and he’s just had an unfortunate encounter with 'palm-sized Taiga' – a feisty and dainty wench in his class. With different cleaning habits and tempers, the two clash like night and day; that is, except for the fact that Taiga and Ryuuji have crushes on the other's good friend! With school rumors abounding, the duo must now work together to play matchmaker for each other. Who will end up with their true love?
The main male character in TD has similar traits to Kodaka and is somehow a magnet to odd girls. I would recommend TD for the similarity of setting and character relationships.
both haganai and toradora are comedy animes focused around a guy who has been misunderstood becuase of his delinquent looks and a girl who is completly untouchable. both have a cast of charecters around them to support and misinterprete their every action. i personally enjoyed haganai more and it can be a much more lets say mature than toradora but if you liked one 90% chance you will like the other
Having been close friends for years, when young Tooru passes her entrance exam she immediately rushes to tell Run that they will be attending the same school. However, since Run is one year older, not only will the two girls be in different classes, but the air-headed second year has already made her own friends, Yuuko and Nagi. Now the small, volatile and overprotective Tooru must learn to share her best friend and get to know her new acquaintances, as the four girls make the most of each new day.
Hasegawa Kodaka has transferred schools, and he's having a hard time making friends. It doesn't help that his blond hair tends to make people think he's a delinquent. One day, he runs into his bad-tempered solitary classmate Yozora while she's talking animatedly to her imaginary friend Tomo. Realizing that neither of them have any actual friends, they decide that the best way to alter this situation is to form a club and start recruiting. That is how "Rinjinbu", The Neighbours' Club, was formed, a club specifically designed for people who don't have very many friends. As other lonely classmates slowly join their little club, they'll try to learn how to build friendships through cooking together, playing games, and other group activities. But will this group of relationship-challenged misfits really be able to get along?
Death and reincarnation are inescapable, but what happens in between? Without warning and without his memories, a boy who only recalls his last name - Otonashi - wakes up next to a girl named Yuri who offers him a gun and tells him to shoot an angel. Assuming it must be a misunderstanding, Otonashi is then almost killed by the angel and is drawn into Yuri's army to battle to delay the beginning of his next life. Immortality is within reach, but if Otonashi remembers how he died, will he keep fighting or allow himself to vanish?
Angel Beats is fast paced, Boku wa is slower. Both have the same sort of feel, with an isolated group of friends spending a lot of time together, although Boku wa... doesn't have quiet the same back-story that Angel Beats has. Both are more club-activity based, and we see next to nothing of school life itself. While Angel Beats seems to be driven and focused, Boku wa... is calmer and more free flowing anime. Both focus on club activities and a sort of school life, but Angel Beats has more of a supernatural role to it (which is necessary and set up quiet well).
Tomoya Okazaki is a third-year high school student who is generally bored with life and doesn't take his studies, future, or anything else seriously. One day, however, he meets a lonely-looking girl in the school courtyard, Nagisa Furukawa. She explains to him the source of her loneliness: she had missed a lot of the previous school year and thus is repeating her third year; everybody that she knew has already graduated, and she is lonely. Tomoya is rather indifferent at first, but decides that he has nothing better to do and spends increasingly more time helping Nagisa restore the school drama club. As his relationship with Nagisa grows, Tomoya begins to open up to various other people around the school as well...
Creating a club with the help of a male protagonist who is mislabeled as a delinquent, leading to the establishment of friendships for a lonely girl(s) - these are their similar stories. If you enjoy how characters make friends in one of these, you'll surely take a liking to the other.