Dropping this here partially as a note to myself and partially as a note to all the others who have been kind enough to work with me on these projects. I tend to work with two sizes of magic systems, full, and small. I'll eventually add the counts for everything.
Full:
3 Base Classes
10 Prestige Classes
100 "Spells"
50 Feats
4 Races
1 Skill
20 Magic Items
10 Monsters
Small:
1 Base Class
5 Prestige Classes
50 "Spells"
20 Feats
10 Magic Items
5 Monsters
Existing Systems:
Rituals - Complete
PPF - Needs Monsters, Races, Magic Items (does have a large number of new weapons). Probably needs more Feats and Prestige classes for Chronomancer & Echocaller
Runecarving - Everything
Necromantic - Everything
Osteomancy - Feats, Magic Items, Monsters
Arx - Feats, Magic Items, Monsters
Astral - Everything
Spellsong - Everything