Help identifying a HL2 mod

[javierdl]

Probably the most peculiar feature of this mod is that they preserved the original "long-jump pack". I don't know you but I for one miss it big time! I most definetely don't like the HL2 replacement (Turbo/AUX power).
I thought I had made a bookmark of this mod's site but I can't find it.
Can anyone tell me which one is it?

Jay

 

[Beerdude26]

Smod?

 

[$kelet0r]

hl2dm pro has the long jump module
is it a singleplayer or multiplayer mod?