There are still less than 10 that we actually know about in the books + some of legend with unknown whereabouts.
http://awoiaf.westeros.org/index.php/Valyrian_steel#List_of_known_Valyrian_steel_blades
Quote:
Blades known to still exist:Blades with known fates:
- Heartsbane, the ancestral two-handed greatsword of House Tarly, currently in the possession of Lord Randyll Tarly.
- Lady Forlorn, the ancestral sword of House Corbray, currently in the possession of Ser Lyn Corbray.
- Longclaw, the ancestral Valyrian steel ******* sword of House Mormont. Currently in the possession of Jon Snow.
- Nightfall, the ancestral blade of House Harlaw and currently wielded by Ser Harras Harlaw.
- Oathkeeper, one of two Valyrian blades reforged by Tobho Mott from Ice. The blade was made for Ser Jaime Lannister, but he has given it to Brienne of Tarth for use in her quest to locate Sansa Stark. The blade was given its name, Oathkeeper, at that time.
- Red Rain, the sword of House Drumm, which was stolen by them in a raid.[url=http://awoiaf.westeros.org/index.php/Valyrian_steel#cite_note-Raffc19.7B.7B.7B3.7D.7D.7D-18][19][/url] Given the name and coloring, possibly the ancestral sword of House Reyne.
- Widow's Wail, one of two Valyrian blades reforged by Tobho Mott from Ice. Following Joffrey Baratheon's death, ownership of Widow's Wail has presumably passed to his younger brother, Tommen.
- The dagger with a dragonbone hilt wielded by Bran Stark's failed assassin, and currently in the possession of Petyr Baelish.
- Valyrian steel arakh owned by Caggo.[url=http://awoiaf.westeros.org/index.php/Valyrian_steel#cite_note-Radwd25.7B.7B.7B3.7D.7D.7D-19][20][/url]
- Valyrian steel axe reputedly possessed by House Celtigar.[url=http://awoiaf.westeros.org/index.php/Valyrian_steel#cite_note-Rasos36.7B.7B.7B3.7D.7D.7D-20][21][/url]
Blades with unknown fates:
- Ice, the ancestral two-handed greatsword of House Stark. Following Eddard Stark's execution in King's Landing, it is reforged into two longswords (Widow's Wail and Oathkeeper).
- Blackfyre, the sword of Aegon I Targaryen. Carried by all Targaryen kings until Aegon IV, who gave it to his ******* Daemon, who rose in rebellion against the Targaryens, taking the sword's name for his house. Its whereabouts are currently unknown.
- Brightroar, the ancestral sword of House Lannister, lost when King Tommen II Lannister of the Rock sailed to Valyria and never returned.
- Dark Sister, the sword wielded by Visenya Targaryen. Its last known owner was Brynden "Bloodraven" Rivers.
- Lamentation, the ancestral sword of House Royce, lost in the Storming of the Dragonpit.[url=http://awoiaf.westeros.org/index.php/Valyrian_steel#cite_note-Rtwoiaf.7B.7B.7B2.7D.7D.7D.7B.7B.7B3.7D.7D.7D-21][22][/url]
- Orphan-Maker, the ancestral sword of House Roxton. Its last known owner was Ser Jon Roxton.[url=http://awoiaf.westeros.org/index.php/Valyrian_steel#cite_note-Rtpatq.7B.7B.7B2.7D.7D.7D.7B.7B.7B3.7D.7D.7D-22][23][/url]
- Truth, a Valyrian steel sword last carried by Moredo Rogare of Lys.[url=http://awoiaf.westeros.org/index.php/Valyrian_steel#cite_note-Rtwoiaf_the_quarrelsome_daughters:_myr.2C_lys.2C_and_tyrosh.7B.7B.7B3.7D.7D.7D-23][24][/url]
- Vigilance, the ancestral sword of House Hightower. Its last known owner was Lord Ormund Hightower.[url=http://awoiaf.westeros.org/index.php/Valyrian_steel#cite_note-Rtpatq.7B.7B.7B2.7D.7D.7D.7B.7B.7B3.7D.7D.7D-22][23[/url]
http://awoiaf.westeros.org/index.php/Valyrian_steel#List_of_known_Valyrian_steel_blades