Best professional certification exam study guides, according to AI

Data as of Aug 25, 2026 · Based on 285 AI responses · See how Parse measures this

Professional Certification Exam Study Guides

153 brands

ParseChatGPT + Google AI

Parse

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Measured across ChatGPT & Google AI

Best Professional Certification Exam Study Guides, According to ChatGPT & Google AI | Parse

#	Brand	What AI says	Mention rate
1	MometrixThe dominant leader for both payroll and civil service exam prep guides.	The dominant leader for both payroll and civil service exam prep guides.	70%
2	Barnes & NobleGained prominence as a key retailer for various print Study guides.	Gained prominence as a key retailer for various print Study guides.	40%
3	Peterson's		38%
4	JobTestPrepSurged in visibility, specializing in role-specific civil service practice tests.	Surged in visibility, specializing in role-specific civil service practice tests.	36%
5	Passbooks		35%
6	Amazon		31%
7	Trivium Test PrepNew entrant in early 2026, cited for focused Civil Service Study Guides.	New entrant in early 2026, cited for focused Civil Service Study Guides.	31%
8	Civil Service Prep		28%
9	Kaplan Test Prep		26%
10	New York State Department of Civil Service		26%
11	Civil Service Study GuidesGained visibility in 2026 for its downloadable, specialized civil service guides.	Gained visibility in 2026 for its downloadable, specialized civil service guides.	26%
12	Study Civil Service		19%
13	Target		18%
14	Walmart		16%
15	Better World Books		13%
16	Queens Library		13%
17	CSEA Work Institute		12%
18	World of Books		12%
19	Kaplan		12%
20	APEX Test Prep		11%
21	Books-A-Million		11%
22	Barron's Educational Series		10%
23	Study Guide Zone		9%
24	U.S. Government Publishing Office (GPO)		9%
25	Test Prep Books		8%
26	New Jersey State Library		8%
27	Federal Government of the United States		8%
28	Columbia County, New York		7%
29	Mass.gov		7%
30	Erie.gov		7%
31	EBSCO		6%
32	iPrep Online		6%
33	Barron's		5%
34	Civil Service Employees Association		5%
35	CivilServiceExam.org		5%
36	Alphabet		5%
37	RedShelf		5%
38	BookAuthority		5%
39	Test Prep Review		5%
40	Sullivan County, NY		4%
41	Cortland County		4%
42	Miller Business Center		4%
43	Hearst		3%
44	Examzify		3%
45	Etsy		3%
46	Norman Hall		2%
47	CCS Test Prep		2%
48	DC 37 Education Fund		2%
49	Mahi Publication		2%
50	New York State Unified Court System		2%
51	U.S. Office of Personnel Management		2%
52	Westchestergov		2%
53	USAJOBS		2%
54	American Book Warehouse		2%
55	Delaware County (NY)		2%
56	Research & Education Association (REA)		1%
57	Wyoming County, NY		1%
58	Town of Hempstead		1%
59	Organization of Staff Analysts		1%
60	Teachers Pay Teachers		1%
61	Ministry of Foreign Affairs & International Cooperation (Fiji)		1%
62	KKR		1%
63	RCQ Books		1%
64	Practice4Me		1%
65	National Identity Management Commission (NIMC)		1%
66	Civil Service Success		1%
67	StudyFrequently cited for its structured, online course-style prep for the CPP exam.	Frequently cited for its structured, online course-style prep for the CPP exam.	1%
68	River's End Bookstore		1%
69	BookHolders.com		1%
70	The Princeton Review		1%
71	Prepterminal		1%
72	State of California		<1%
73	Warner Bros. Discovery		<1%
74	Arco		<1%
75	New York City		<1%
76	Platinum Equity		<1%
77	JD Advising		<1%
78	Pocket Prep		<1%
79	CliffsNotes		<1%
80	Complete Test Preparation Inc.		<1%
81	Bookshop.org		<1%
82	NY.gov		<1%
83	I/O Solutions		<1%
84	DirectTextbook		<1%
85	Riverhead Library		<1%
86	The Best Schools		<1%
87	Broome County		<1%
88	Edx		<1%
89	Jackson Redevelopment Authority		<1%
90	Several		<1%
91	City of Albany		<1%
92	Commonwealth of Pennsylvania		<1%
93	Nassau County		<1%
94	AI CERTs		<1%
95	Civil Service Bookshop		<1%
96	Civil Service Fast Stream		<1%
97	Melsoft Academy		<1%
98	University of Cape Coast		<1%
99	Blackwell's		<1%
100	Exam-Labs		<1%