Kore ga Watashi no Goshujinsama

Someone in debt working as a maid/butler at the place of his master (the one he owns the debt) and everything in some harem, romance, comedy style. 

If you appreciate maid anime then why try butler,combat butler to be exact i wuldnt say that its better but its pretty similar and a bit "perv-ish" too.did i mention the love triangle rocks! 

HiMM looks more similar to HnG! than Kimiga Aruji because of the crazyness and the dynamism it has inside. The developments are about the same—butler/maids. It's the same battle where debt is the reason for having the characters continue together. 

mansion, debt, dangerous pet with otaku mentions... along with ecchi added 

Main characters in dept to master in both anime. 

Same problem of the main character having an insanely big debt to their masters, both of them are somewhat in love to their masters, their masters are so rich & lives in an insanely large mansion. 

Ecchi everywhere, comedy, maid-butler and those kind of relationships, what more do you want? 

Both center around the whole master servant thing...only this time the master is a female and the servant a male. 

If you liked Kimi ga Aruji Shitsuji ga Ore de or better known has They Are My Noble Masters, than you'd probably will like He is my Master because....both are similar how they both deal with kids running away from their home for one reason or another. And end up becoming a butler/maid they both have Ecchi and maids of course and a Harem feel to it and Perverted Masters in them.  

Both Anime has the maid and master theme. In both anime the main characters ran away from home. The main characters in both anime become maids to rich masters. He is my master is a bit more of a comedy aproach to the maid anime genre than Kimi ga aruji de shitsuji ga ore de. Both anime are good but I prefer kimi above he is my master. 

A girl is "hired" by a boy to do some dirty work, just like Haruhi in the beginning of Ouran. Though, He is My Master is a bit more perverted and is the traditional Harem style anime they both have their emotional moments and their hilarious moments :] 

well, again here the heroine breaks an expensive vase and have to pay it with work for the "master" 

They both have similar feeling to how the main character(s) have to pay off a debt for breaking things. They are forced to work and at first they both are very reluctant but eventually they become comfortable. 

both main characters are boys, one who is a pervert in " He is my Master " , and in " maid-tai " he is sensitive to girls touching him.. both live in a house alone with girls.. 

Well, both of these series here have what every rich person already have. They have the money, the maids, and almost everything they've ever wanted. In both series, there is a lot of comedy, drama, and fanservice. The main protagonist in both series are quite different in personality but has similar possessions. Both series also has some hints of romance as well as a few emotional moments at rare times. 

Master servant relationships, but the difference the women are part dogs/foxes. ...Hilarity ensues. 

both main characters are perverts with many girls around them.. 

These two series share the same three core elements: maids, boobs, and humour. He is My Master combines the 'maids' and 'boobs' elements into the same characters while Maid Guy has the 'master' characters providing the fanservice, but let's be honest, it doesn't make much of a difference. 

They both share the same theme. one guy and many girls. they're both silly, entertaining, lacking of real plot. 

Both series have a lot in common in a general sense. A young guy gets young maid/s to work for him. Both series were done by Gainax. Also both have a similar sense of humor. While it takes the similar concept as He is My Master, Mahoromatic does ever thing better. Mahoromatic has a far better story, is funnier, and ecchier.