Lookalikes · Data refreshed October 2026

25 SEI lookalikes

Compiled by the RevenueBase Data Team Data refreshed Oct 16, 2026 1998 matching companies

Looking for SEI lookalikes, SEI competitors or SEI alternatives? The RevenueBase company graph holds 1998 companies that do what SEI does, matched at 85%+ measured description similarity (RevenueBase, October 2026). The 25 largest are ranked below by team size; across all 1998 matches RevenueBase tracks 101,862 professional contacts, including 41,612 with verified work emails.

Similarity is measured on what companies actually do, from their business descriptions rather than industry codes, and is shown per row as a percentage. This page keeps only companies at 85%+ measured similarity to SEI and ranks them by company size. Data current as of October 16, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list Similarity shown on every row Refreshed Oct 16, 2026 Match quality audited by blind human judging

Reference company

SEI

“SEI is a management consulting firm delivering fresh perspectives and reliable results.”

501-1,000Employees

650Contacts tracked

523Verified emails

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The 25 largest SEI competitors and alternatives

Ranked by team size

Top 25 of 1998 companies matching SEI at 85%+ description similarity, ranked by team size. Similarity is each company's measured match to SEI (100% = identical). Data refreshed Oct 16, 2026.
#	Company	HQ	Employees	Similarity	Verified emails
1	ZS	Evanston, US	10001+	91%	9,708 contacts →
2	Ci&t	New York, US	5,001-10,000	87%	3,385 contacts →
3	Tiger Analytics	Santa Clara, US	5,001-10,000	86%	2,370 contacts →
4	Monitor Deloitte	n/a	5,001-10,000	87%	898 contacts →
5	SIA	Paris, FR	1,001-5,000	89%	1,505 contacts →
6	Artefact	Paris, FR	1,001-5,000	86%	1,107 contacts →
7	SG Analytics	New York, US	1,001-5,000	89%	910 contacts →
8	Keyrus	Levallois-Perret Cedex, FR	1,001-5,000	85%	805 contacts →
9	Latentview Analytics	Chennai, IN	1,001-5,000	87%	583 contacts →
10	Adastra	CA	1,001-5,000	86%	835 contacts →
11	Solita	Warsaw, PL	1,001-5,000	90%	1,196 contacts →
12	Valcon	Cs, NL	1,001-5,000	86%	753 contacts →
13	Lingaro	Warsaw, PL	1,001-5,000	86%	983 contacts →
14	SDG Group	Milano, IT	1,001-5,000	87%	274 contacts →
15	MJV Technology & Innovation	Atlanta, US	1,001-5,000	85%	47 contacts →
16	Centric Consulting	Dayton, US	1,001-5,000	86%	805 contacts →
17	Spindox	Milano Mi, IT	1,001-5,000	86%	769 contacts →
18	Bluetab, An IBM Company	Madrid, ES	1,001-5,000	87%	137 contacts →
19	Agilisium Consulting	Los Angeles, US	1,001-5,000	86%	294 contacts →
20	Eliassen Group	Reading, US	1,001-5,000	90%	367 contacts →
21	Turnberry Solutions	Minneapolis, US	1,001-5,000	85%	348 contacts →
22	Metyis	Baar, CH	1,001-5,000	88%	458 contacts →
23	VMO	Hanoi, VN	1,001-5,000	86%	86 contacts →
24	KPI Partners	Oakland, US	501-1,000	88%	199 contacts →
25	Sightspectrum	Crowley, US	501-1,000	86%	137 contacts →

Showing the 25 largest of 1998 similar companies

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How similarity works

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Matching: Companies are matched on what they actually do, as described in their own business descriptions, never on shared industry codes. The list keeps only matches at 85%+ measured similarity to SEI, and match quality is audited by blind human judging. Read the full methodology.
Ranking: Team size, largest first, among the matched companies: companies are ordered by the number of professionals RevenueBase tracks at each one. Each row also shows its measured similarity to SEI as a percentage.
Verification: Contact records re-verify on a rolling cadence rather than being scraped once and left to decay; each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on October 16, 2026. Lists refresh periodically as the graph is re-checked.

Frequently asked

What are SEI lookalikes?

SEI lookalikes are companies that closely resemble what SEI does and sells, based on each company's own business description. The table above ranks the closest matches by company size, with each company's similarity to SEI shown as a percentage.

What companies are similar to SEI?

The largest companies similar to SEI are ZS, Ci&t, Tiger Analytics and Monitor Deloitte. The table above shows the 25 largest of the 1998 matched companies, with each row's similarity shown as a percentage.

How is similarity measured?

Similarity scores how closely a company's business, as described in its own words, matches SEI's, shown as a percentage (100% = an identical description). The list keeps companies at 85% or above and ranks them by team size.

How do I get contacts at these companies?

A free RevenueBase account lets you run this exact search and work the top matches, verified emails and direct dials included. Upgrading unlocks the 41,612 verified emails and direct dials tracked across all 1998 matched companies.

Who are SEI's biggest competitors?

The largest SEI competitors by measured business-description similarity are ZS, Ci&t, Tiger Analytics and Monitor Deloitte. Every company here does what SEI does at 85%+ similarity, ranked by team size.

What are the best SEI alternatives?

The closest SEI alternatives are the companies whose own business descriptions match SEI's most closely, shown above with each one's similarity as a percentage and ranked by team size.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 16, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.