There are many good weapons on runescape. For ranged, darts and throwing knives are pretty good and fast. Magic short bow is good too and has decent speed and ranged bonus. crystal bow from roving elves quest is pretty good and probably one of the best bows in the game, al though it is a little expensive, it uses no ammo.
For meleeing, abyssal whip is a good option, but it does not train strength. It is fast, and has pretty good bonuses. Saradomin sword has the same slash and strength bonus as whip, but it does train str, but its also 2h, it has crush bonuses too and prayer bonus, as well as a good special attack. God swords are one of the best weapons since they have really really high bonuses, and are really strong, but they are a bit slow, but they special attacks are powerful and some have special abilities like healing, reducing stats, or freezing. god swords are popular on pvp for their specials.
PVP weps is the best but the effects are that they only last for 30 mins =[ there are also weps like the barrows arm veracs- hitting through armour/prayer and dhorka- hitting well over 1100lp but u have to have a low hp to do so
the strongest weps that arnt pvp is the chaotic Maul, fairly new wep from dungeoneering this crazy weapon is 1.8X the strength of a godsword! so each time it hits likes like a AGS spec, this weapon can be countered with a special dungeoneering shield that has a effect of 20% less damage (depending on which shield)
Well, if you are a member probably the Abyssal whip.
In nonmember: I myself prefer the scimitar or the 2h(though the 2h can be slow and does not require a shield.)
Dragon claws
Gravite shortbow.
In my opinion the best is a rune scimatar
vestas sword, but the best weapon is chaotic maul.
The overall best f2p Runescape weapon is actually a range weapon - Maple Longbow (sighted). It has a range bonus of over 100. The best f2p degradeable weapon is the Gravite 2h. Both are Dungeonneering weapons and need 45 Dungeonneering levels.
the best weapon in RuneScape seems to be the Chaotic Maul, having an enormous max of 686(68) recorded. You can get the Chaotic Maul by obtaining 200,000 points in the Dungeoneering skill.
I think the Godsword is the best weapon you could get. Each Godsword has diffrent high hits but all of them are good.
In my opinion it is a mithril scimitar.
An Abyssal Whip, this weapon requires 70 Attack to wield, but this being the best one-handed weapon in Runescape also comes at a moderately-high price inside the Grand Exchange, especially to a new member.
armadyl god sword for two handed weapons and abyssal whip for a single handed weapon
Saradomin sword or Dragon scimitar are popular.
The adamant battle axe and adamant scimitar are.