FaxCore vs SingleFax API

FaxCore

Figure	FaxCore	SingleFax API
Price from	$60/mo	$6.58/mo
Free plan	—	—
Free trial	Yes	—
Open source	—	—
Web	Yes	Yes
Windows	Yes	—
API	Yes	Yes
Self-hosted	Yes	—
Plans published	5	4
Spec score · Fax APIs	9.0 (#2)	7.0 (#24)
Headquarters	Parker, Colorado, United States	The company lists its address as 30 N Gould St Ste R, Sheridan, WY 82801, USA.
Integrations	The site lists integrations with Office 365, Exchange, SQL Server, SharePoint, Microsoft Active Directory, SAP, and MFP connectors.	The separate MCP connection supports Cursor, Claude, Codex, ChatGPT, and VS Code using OAuth.
Product	FaxCore provides enterprise fax server software deployed on-premises, as a managed cloud service, or in a hybrid configuration.	SingleFax provides a REST API and CLI for sending faxes from a backend using an API key and prepaid credits.
Security	FaxCore describes HTTPS, two-factor authentication, end-to-end encryption, and in-network routing as security measures for protecting faxes.	The maker's HIPAA page describes TLS 1.3 in transit, AES-256 at rest, isolated PHI storage, and automated media purge with an audit trail.
Support	Support is available by phone, email, remote access, and a support ticket form; phone support hours are Monday through Friday, 9 AM to 8 PM Eastern Time.	The About page lists [email protected] as support and says the same mailbox handles product questions, partnerships, and abuse reports.

FaxCore has no write-up on Specifiction yet; its figures are above.

SingleFax API has no write-up on Specifiction yet; its figures are above.