Good sources of different kinds of router bits for CNC applications:

Tapered Ball nose: Precise Bits
-- 1/16in (0.0625 in, 1.600 mm) dia. 4-flute 5.4° Tapered Ball-nose Carving bit, 1.00 in. max DOC, 1/4 in. shank, 2.5 in. OAL (overall length)
-- 1/8in (0.1250 in, 3.175 mm) dia. 4-flute 3.6° Tapered Ball-nose Carving bit, 1.00 in. max DOC, 1/4 in. shank, 2.5 in. OAL
-- 1/4in (0.2498 in, 6.345 mm) dia. 4-flute 0° Tapered Ball-nose Carving bit, 1.00 in. max DOC, 1/4 in. shank, 2.5 in. OAL

V-Bits: Precise Bits
-- 30° V-groove cutter, 2 flute, 1/4" shank, solid submicrograin carbide bit, 0.467 in. DOC, 2.5 in. OAL
-- 60° V-groove cutter, 2 flute, 1/4" shank, solid submicrograin carbide bit, 0.217 in. DOC, 2.5 in. OAL
-- 90° V-groove cutter, 2 flute, 1/4" shank, solid submicrograin carbide bit, 0.125 in. DOC, 2.5 in. OAL

and larger V-bits from MLCS (e.g., #7722 1/2 60 deg V-bit)


End Mills: Magnate (may have to call to order some of these part numbers - Tel : 909-468-5008 9AM-5PM pacific)
#9477 1/8" upcut spiral with a 1/4" shank (solid carbide) 2.5 overall length (cut length 0.75") $15
#9497 1/8" downcut spiral with a 1/4" shank (solid carbide) 2.5 overall length (cut length 0.75") $15
#2005 1/4" upcut spiral with a 1/4" shank (solid carbide) 2.5 overall length (cut length 1")
#2105 1/4" downcut spiral with a 1/4" shank (solid carbide) 2.5 overall length (cut length 1")

Other endmill options from Magnate
#9478/#9498 1/8 upcut/downcut 1/4" shank, 0.75" cut length, 2" overall length ~$15
#2001/#2101 1/8 up/down spiral, 1/4" shank, 1/2" cut length, 2" overall length ~$15
#2004/#2104 1/4 upcut/downcut 1/4" shank, 0.75" cut length, 2.5" overall length
#2024/#2124 1/4 upcut/downcut 1/4" shank, 1.25" cut length, 2.5" overall length

1/16 endmill: #5465 MLCS Single Flute Straight

MLCS full carbide end mills (1/8, 1/4, etc.) - upcut and down cut: (good but 1/8 has a shorter cutting length options than Magnate; but free shipping)
MLCS premium carbide end mills


Precise bits has cases too.