List of payment processors...

...Credit card processors, e-money, merchant account issuers, paypal alternatives and other payment alternatives. If you would like to contribute to this list, please use the Contact Us link above to provide out on a link we may have missed out on, or perhaps you might like to highlight a mistake we may inadvertently have made.

1. 2CO
2. Alert Pay
3. Alter Gold
4. Applied Merchant
5. Authorize.net
6. Bank of America
7. Blue Pay
8. Captial Merchant Solutions (www.TakeCardsToday.com)
9. Cardia
10. Cash U
11. CC Avenue
12. CC Bill
13. CC Now
14. CDG Commerce
15. Centipaid
16. C-Gold
17. Charge
18. Concorde FS Net
19. CyberBit
20. Dao Pay
21. DirectOne
22. Durango Merchant Services
23. eCharge
24. EBS (Processor for Indian companies only)
25. EC Suite
26. Echo Online
27. E-Gold
28. Elavon
29. Electracash
30. Entropay
31. Event Registration
32. ePassporte
33. ePDQ
34. eWay
35. Face Book Payment Application
36. Fail Safe Payments
37. Fastspring
38. First Pay
39. Gate2Shop
40. GloBill
41. Go eMarchant
42. Go Real Time
43. Google Payments
44. iKobo
45. InstaBill
46. Internet Secure
47. iTransact
48. ITC (also for Gambling, Adult and Pharma)
49. Liberty Reserve
50. Link Point
51. Miva Merchant
52. Money Bookers
53. Money Gram
54. Multicards
55. Multipay
56. Net Banx
57. Net Billing
58. No Chex
59. NR Registry
60. Obopay
61. Ogone
62. Pay By Check
63. Pay Omo
64. Pay Pal
65. Pay Pay
66. Payment Express
67. Payment Resources International
68. Payoneer
69. Pay Simple
70. Pay Systems
71. Payzip
72. Pecunix
73. Planet Payment
74. Plimus
75. Plug n Pay
76. Protx
77. PS Bills
78. PSI Gate
79. Realex (Realtime Payment Exchange)
80. RegNow
81. Revolution Money Exchange
82. Robo Xchange
83. RTWare
84. Safe Charge
85. Safe Pay Card
86. Safe Pay Solutions
87. Skip Jack
88. SWReg
89. Trans First
90. USA ePay
91. Verza
92. Via Klix
93. Wells Fargo
94. Western Union
95. WM Transfer
96. World Pay
97. W-Pay
98. Xcoin
99. Xoom

Entries in Bold, needless to say are the most well-known ones.