Black Ore vs Fieldguide: who uses which
Customers, public proof and the companies that use both.
On usedby, 3 companies use Black Ore and 36 use Fieldguide. 1 company uses both, including Withum. Fieldguide leads among the Accounting & Audit companies on usedby that use either tool.Latest check Oct 19, 2026: 39 of 39 public lines checked. Counts include every proof level, job-post signals included. A company on both tools counts at any proof level, and a job post on one side is marked as such.
Who uses Black Ore, Fieldguide, or both
Every company with a public proof for at least one of the two tools.
2
use only Black Ore
1
company uses both
35
use only Fieldguide
2 companies use only Black Ore, 35 use only Fieldguide and 1 uses both, out of the 38 companies on usedby that use at least one of them.
Who uses both
Companies with a public line on both tools, at any proof level: the strongest proofs come first, and a job post is marked.
| Company | First public proof, Black Ore | First public proof, Fieldguide |
|---|---|---|
 Withum | On or before Oct 2026 | On or before Sep 2026 |
Side by side
Facts from our data and from each vendor's public pages. Each line says where it comes from.
Black Ore
FieldguidePricing, security and data residency are not checked yet. usedby adds them from each vendor's public pages, with the date of the check.
What customers report
Results as the vendor or the customer published them, with the source and the date.
Black Ore
No reviewed story for Black Ore yet.
Fieldguide
Holbrook & Manter’s teams are already saving 35-50% in hours per engagement.
Holbrook & Manter
Vendor case study, fieldguide.com, captured Oct 7, 2026
helping reduce the amount of on-site travel by 75%
BerryDunn
Vendor case study, fieldguide.com, captured Oct 7, 2026
Questions about Black Ore and Fieldguide
Which is used more, Black Ore or Fieldguide?
Fieldguide has more customers on usedby: 36 against 3 for Black Ore.
Do companies use both Black Ore and Fieldguide?
Yes. 1 company uses both on usedby, including Withum.
Who uses Black Ore?
3 companies on usedby, each with the public page that shows it. See who uses Black Ore.
Who uses Fieldguide?
36 companies on usedby, each with the public page that shows it. See who uses Fieldguide.
How does usedby count customers?
A company counts when a public page shows it: a vendor's customer page, a case study, a press release or a job post, most saved with a dated capture. Every line is a customer, at one of four proof levels: confirmed, declared by the company itself, observed or signal (a job post, the weakest). A company counts as using both tools when it has a line on each, at any level; the list shows the strongest proofs first and marks job posts.