If you're looking for anime similar to K-On!, you might like these titles. All recommendations are made by Anime-Planet users like you!
Self-professed lover of all things small and cute, Souta Takanashi finds himself dragooned into working at the Wagnaria family restaurant by the diminutive and vivacious Poplar Taneshima. Though the pay is reasonable and the clientele polite, the high school student is often at his wits' end when dealing with the quirky staff. If the indifferent and street-tough manager, katana-carrying floor chief, and terminally weak Poplar weren't enough, Souta frequently fears for his life, as every encounter with the violently androphobic Inami ends in injury. How long can he survive before the combined stress and harm do him in?
Each of these series have a rather similar feel, similar art work, and some similar comedy thrown in them. There are some parellels in the types of characters they have and they both experiment with different types of moe and a mixture of different characters thrown all together in a similar environment.
The comedy and stlye are very similar. Both are reletively slow paced, slice of life animes and contain a generous dollop of moe. If you like one, the other is worth watching.
"If I don't have to do it, I won't. If I do have to do it, make it quick," is the basic principle by which energy conservationist Houtarou Oreki lives. But after his sister convinces him to join the Classics Club, Houtarou's life is turned upside down when he meets Chitanda, a perpetually-inquisitive girl who challenges the boy's easygoing existence. Intrigued by the slightest hint of a mystery afoot, Chitanda doesn't hesitate to pester the reluctant yet highly analytical Houtarou into satisfying her curiosity at every turn, no matter how small the problem. Alongside fellow members Satoshi and Ibara, the group tackles cases ranging from a self-locking classroom door, a strangely-popular library book, and even the shadowy history of the very club to which they belong!
The art style is somewhat similar to each other and Chitanda Eru from Hyouka has the same attitude as Hirasawa Yui from K-On! :>
Both feature a similar concept of clubs and slice of life, while Hyoka is mystery K-ON! is about music and...tea? Charachter costumization is very similar and some charachters resemble each other in funny ways. If you love Moe that is reason enough to watch other one...
Wakana Sakai was involved in music, but gave it up one day. Konatsu Miyamoto loves singing and can't be torn from it. Sawa Okita would do anything for her closest friends. They laugh, they fight, they worry, they love... Through their very ordinary lives, little by little the girls learn to move forward. Sometimes they feel as if they can't go on alone, but as long as they have their friends, they believe they'll make it someday. Wakana, Konatsu, Sawa, and the music they make in their ensemble weave a tiny but dazzling story of the power of music.
Both are about friends in a school band. Furthermore, both are absolutely gorgeous-looking with cute characters (even the boys, in Tari Tari, are adorable!) Tari Tari has more drama than the easy-going K-On! but they both go hand-in-hand for fans of Slice of Life anime about music and school kids.
So well, both are based around the idea of music and a music club. However K-on's light music club is a all girl club and Tari Tari's choir is a mix. Tari Tari and K-on are also both about restarting/creating new clubs. Both also have references to the previous choir/light music club. The final thing is that they have similar genres...School Club/Life, Slice of Life and Music! So if you liked one you should like the other.
The second year of high school is starting and things are still as crazy as always. Despite numerous attempts, the ever-so-hopeful Harima and the overly-naïve Tenma failed to get their message of love across. Now they are pumped up for a new term and ready to renew their illustrious and self-destructing attempts at a confession! But be it a love infested manga or even a gigantic plate of curry; nothing seems to do the trick. What other methods can they take, as the old love triangle is expanding at an alarming rate?!
In today's technology-driven society, everything has to move with the times, and magic is no exception. As spells are cast with various magic "codes", made up of binary digits, a computer becomes just as useful to the aspiring mage as a magic wand. One such would-be wizard is Koyomi Morishita, a girl who suffers from a bizarre inability to cast more than one type of spell. No matter how hard she concentrates she can only use code to do one thing: summon metal wash basins, directly above people's heads more often than not! Hoping to improve her versatility, she becomes a student of voluptuous expert witch Misa Anehara. However, with malevolent "daemons" - monsters summoned by unscrupulous magic wielders - appearing at every turn, Koyomi will need all the help she can get!
Both of these shows have an adorable cast that are best describe as being cute, warm, fuzzy, slightly clusmy and ditzy (in other words, "moe" if you want an otaku-term for it ^^). They both leave you with a fuzzy feel-good kind of emotion, and although they might not be the most epic-awesomest show ever, they will certainly bring a cute smile to your face simply because the cast are just ADORABLE~~!! XD