Tales of Symphonia: Equipment:Weapons
Kratos & Zelos (Swords)
NameATKDEFINTACCEVALCKAASpecialAquire
Long Sword85 Added Damage to HumansB: Triet
Steel Sword160 Added Damage to HumansB: Palmacosta, Asgard, Luin; C: Palmacosta, Luin
Silver Sword265 Added Damage to UndeadC: Asgard, Luin; B: Meltokio
Aqua Brand350 Added Damage to HumansB: Sybak; C: Sybak, Mizuho, Ozette
Sand Saber440 Added Damage to HumansT: Toize Valley Mine
Lightning Sword470 Added Damage to HumansT: Tethe'alla Base; B: Flanoir
Ice Coffin500 Added Damage to HumansB: Altamira; T: Temple of Ice
Ether Sword590 Added Damage to HumansT: Iselia Human Ranch; B: Heimdall
Flamberge650 Kratos has it when rejoining*
Laser Blade710 Added Damage to HumansT: Tower of Salvation; C: Flanoir
Baseball Bat750-30 40 -20 B: Luin (revived)
Excalibur800 Added Damage to HumansAdvanced Coliseum: Kratos/Zelos
Last Fencer920 Added Damage to HumansD: Seles
Soul Eater0-50-50-30-30-30 Devil's ArmE: Defeat Sandworm (See sidequests)
*You don't get it in your inventory.

Some useless facts:
-A flamberge is a real kind of sword, but the one in ToS is from Tales of Phantasia
-Excalibur comes from the Namco games staring Gil (Gilgamesh); those games get it from the Arthurian myths, of course.
-Last Fencer comes from Tales of Eternia (aka Destiny II).
-Soul Eater is based on Soul Edge from Soul Calibur.

Kratos & Zelos (Daggers)

NameATKACCEVALCKAASpecialAquire
Stiletto13010 Added Damage to BeastT: Triet Ruins
Hydra Dagger22010 Added Damage to BeastB: Asgard; C: Luin
Earth Dagger25010 Added Damage to BeastC: Asgard, Luin
Assault Dagger41015 Added Damage to BeastC: Mizuho, Ozette
Flame Dagger53015 Added Damage to BeastB: Altamira; C: Altamira
Gladius62020 Added Damage to BeastT: Ymir Forest; B: Heimdall, Flanoir (later); C: Heimdall
Toy Dagger7003080-50 B: Luin (revived)
Crystal Dagger75030 Added Damage to Beast; small TP regenT: Torent Forest
Fafnir0 Devil's ArmT: Gaoracchia Forest
Useless facts: Fafnir is named after an dragon from Norse Mythology. In the Norse legend 'Volsungasaga', he was actually Sigurd's brother. They went together to get some treasure, but Fafnir wanted it for himself and turned into a dragon to guard it. Sigurd slew him.