Best External Audit Software in 2026
Updated
In short: Inflo is ranked #1 of 29 as of 4 October 2026, ahead of AttestWork and CAGos. The lowest first paid tier on this page is AttestWork at $57.50/mo.
External audit software can support the work of gathering evidence, reviewing workpapers, and producing audit reports for clients. Compared on evidence collection, review workflows, workpaper templates, and audit reporting, the options can be assessed against the stages your practice needs to manage. A client portal may affect how you work with clients, and deployment options are worth checking against your requirements. Free-plan availability and paid-from pricing add cost context. Inflo, AttestWork, and CAGos are among the products to examine, with Fieldguide and CCH iFirm also represented. Use the listed criteria to identify which workflows and supporting features matter to your team.
29 external audit software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
External Audit Software, one module each. A lit port is something its maker publishes; 6 of the 25 on this page have a public API.
- 01 Inflo API yesOSS not on recordFREE not on recordDOCS 6.9
- 02 AttestWork API yesOSS not on recordFREE not on recordDOCS 6.8$57.50/mo
- 03 CAGos API yesOSS not on recordFREE not on recordDOCS 6.8₹2,499/mo
- 04 Fieldguide API yesOSS not on recordFREE not on recordDOCS 6.8
- 05 CannyECM API yesOSS not on recordFREE not on recordDOCS 6.7
- 06 CCH iFirm API yesOSS not on recordFREE not on recordDOCS 6.7$60.83/mo
- 07 Autire API not on recordOSS not on recordFREE not on recordDOCS 5.6
- 08 AuditFile API not on recordOSS not on recordFREE not on recordDOCS 5.4$179/mo
- 09 BrightWorkpapers API not on recordOSS not on recordFREE not on recordDOCS 5.4
- 10 CCH Axcess Practice API not on recordOSS not on recordFREE not on recordDOCS 5.4
- 11 GAASFlow API not on recordOSS not on recordFREE not on recordDOCS 5.3$349/mo
- 12 AuditDesktop API not on recordOSS not on recordFREE not on recordDOCS 5.2
- 13 BrightWorkpapers (formerly MyWorkpapers) API not on recordOSS not on recordFREE not on recordDOCS 5.2
- 14 Caseware Audit API not on recordOSS not on recordFREE not on recordDOCS 5.2
- 15 CORAA API not on recordOSS not on recordFREE not on recordDOCS 5.2
- 16 Suralink API not on recordOSS not on recordFREE not on recordDOCS 5.2
- 17 Audit Interact API not on recordOSS not on recordFREE not on recordDOCS 5.1
- 18 AuditBot API not on recordOSS not on recordFREE not on recordDOCS 5.1
- 19 Engagement CS API not on recordOSS not on recordFREE not on recordDOCS 5.1
- 20 Finspectors.ai API not on recordOSS not on recordFREE not on recordDOCS 5.1
- 21 Punchcard API not on recordOSS not on recordFREE not on recordDOCS 5.1
- 22 WeAudit API not on recordOSS not on recordFREE not on recordDOCS 5.1
- 23 AnyAudit.AI API not on recordOSS not on recordFREE not on recordDOCS 5.0
- 24 AuditGear API not on recordOSS not on recordFREE not on recordDOCS 5.0
- 25 AuditMiner API not on recordOSS not on recordFREE not on recordDOCS 5.0
Is your platform on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which external audit software is ranked first on Inferse?
Inflo is ranked #1 of 29 with a score of 6.9. AttestWork is second and CAGos third.
How many of these have a free plan?
0 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, AttestWork has the lowest first paid tier we found: $57.50/mo.
How is this list ranked?
Ranked on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it. Paid placements never change a rank.