Plumb
C+

business-software

Forrester

None (independent; publicly traded, Nasdaq: FORR)

Ratings & rankings Free to read Visit Forrester ↗

A respected analyst firm with a published Wave methodology, but it sells the same vendors it ranks research licenses and reprints, and critics note the Wave doesn't disclose which ranked vendors pay.

What it's really for A subscription analyst firm; the Wave ranks tech vendors via questionnaires, demos, and references.

What our grade covers The grade on this page is about its 'Forrester Wave' vendor evaluations, not everything the site does.

High Scoring Confidence Checked against primary sources. We are confident in the facts and the grade here.

Follow the money

Both enterprise buyers (subscriptions, consulting) and the ranked vendors themselves pay Forrester; vendors license reprints and member access to market favorable results, and a critic alleged a top-rated vendor's studies/webinars generated an estimated $500,000 for Forrester. Forrester's policy states it treats vendors equally regardless of commercial relationship and that account managers and C-suite stay out of the Wave process, but the report does not publicly flag which ranked vendors pay.

Source →
Operating since
1983 (43 years) · source
What it costs you
Free to read The reviews are free to read.
How they make money
A subscription analyst firm whose "Forrester Wave" ranks technology vendors via questionnaires, analyst-led demos, and vendor-supplied reference customers, scored against published weighted criteria.
What they do
Forrester evaluates enterprise technology vendors in "Wave" reports using a three-phase process of vendor questionnaires, executive briefings/demos, and interviews with reference customers the vendor provides.
What to watch for
The catch: ranked vendors can pay Forrester $75K+ for member licenses plus tens of thousands for reprint rights to market the report, and by critics' account the Wave itself carries no disclosure of which ranked vendors are paying clients.
Composite score
2.80 / 5.00 → grade C+

How the grade was reached

Independence · 30% weight 2 / 5

Does the site take money from the very entities it ranks? Pay-for-placement, vendor-funded data, and affiliate commissions all pull this down. The less the ranking can be bought, the higher the score.

Evidence basis · 30% weight 3 / 5

What is the ranking actually built on? Hands-on testing scores highest, then verified first-hand reviews, then opinion or popularity surveys and self-reported figures, then pay-to-rank, which scores lowest.

Method transparency · 20% weight 4 / 5

Is the methodology published, specific, and reproducible? Can a reader see how a given rank was reached, or is it a black box?

Conflict disclosure · 10% weight 2 / 5

Are commercial relationships, sponsorships, and affiliate arrangements disclosed clearly and near the rankings themselves, rather than buried?

Manipulation resistance · 10% weight 3 / 5

How hard is it to game? Controls against fake reviews, solicited reviews, and vendor gaming raise this; an open box anyone can stuff lowers it.

Evidence

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