What are 10 of the most overpowered swords in anime?

Tessaiga from Inuyasha

By the end of the series it can literally rip holes in the space-time continuum Tenseiga from InuyashaYeah it can't kill, but a sword that can bring back the dead is still OP as hell

Ragnarok from Soul Eater

It's a screaming sword that controls blood and has healing abilities, dats pretty cool.

Zanpakuto from Bleach

It's a pretty badass type of weapon that can purify the dead and changes with it's owner, meaning it always suits the wielder. 

The Claymore from Claymore

A giant sword that can cut off a dozen heads at once is nothing to sneeze at.

Sword of the Dragonslayer from Berserk

IT IS A MASSIVE SWORD THAT KILLS DEMONS. enough said.

Samehada from Naruto

A sentient sword that can eat people's chakra and make them pretty much powerless. Also it's pretty badass looking.

Scissor Blade from Kill La Kill

It looks silly but it can rip through buildings like literal paper.

Gintoki's Bokutō from Gintama

It's hilarious because it's this wooden sword that causes insane damage despite the purpose of having a wooden sword being NOT to kill anything.

Mugen from D Gray Man

A somewhat straightforward powerful sword.

Uh... That scissor from Kill la Kill.

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Umm... Some of the swords that Ersa Scarlet has.

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Then there is Roronoa Zoro. His swords aren't that very powerful. What's powerful is him. 

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I think there was a very powerful sword in Six Deadly Sins but I only saw season 1.

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Annoy Excalibur from Soul Eater.

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Wow, this is very hard. Because a lot of the characters I know, they are not strong because of their sword. They are strong because they are... strong. 

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Uh... Future Trunks's Ganki Sword. It's just a sword filled with a lot of energy. It doesn't really do much.

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Umm... The Guyver's vibration sword. Able to cut through almost anything. But no projectiles. 

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Railgun's iron sand sword. But then again, she's the one who's strong, not her sword.

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Bleach has some amazing sword. Yumichika Ayasegawa has a sword that drains his opponent's energy. Aizen Sōsuke has a sword that cast illusions the moment you see his sword. 

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I'm just going to threw this one in there because I'm running out of powerful sword to put in. Elemental Gelade. There are some people in this universe that can turn into weapons for other humans to use. The main character bonded with one of the most powerful human sword in that world named Reverie Metherlence. 

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I guess that's 10. 

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Okay, let me just throw this last one in. Sakata Gintoki from Gintama. His wooden sword, 99% of the time, would not break against anything. That's pretty damn powerful wood he's got right there.