Dataquest :

BPO Rankings
Rank	Company
1	GECIS
2	Convergys
3	WNS
4	Wipro BPO
5	HSBC
6	American Express
7	Dell
8	Sutherland
9	eServe
10	HCL BPO
11	GTL
12	Zenta
13	IBM Daksh
14	ICICI OneSource
15	eFunds
16	Scope 286
17	vCustomer
18	Accenture
19	HP Global
20	MphasiS BPO
21	OfficeTiger
22	EXL Services
23	3 Global
24	Intelenet
25	iSEva
26	JP Morgan
27	Techbooks
28	OKS
29	Progeon
30	24/7 Customer
31	Hinduja TMT
32	AOL
33	TWS Holdings
34	Karvy
35	Ocwen
36	Datamatics
37	Slashsupport
38	Brigade
39	Transworks
40	Sykes