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Esker Fax Server vs RingCentral Fax comparison

Esker, Inc. and RingCentral are both solutions in the Fax over IP (FoIP) category. Esker, Inc. is ranked #6, while RingCentral is ranked #5. Esker, Inc. holds a 7.7% mindshare in FoIP, compared to RingCentral’s 9.0% mindshare.
Esker Fax Server
  • 133 Views
  • 133 Comparison Views
RingCentral Fax
  • 132 Views
  • 132 Comparison Views

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

Esker Fax Server
Ranking in Fax over IP (FoIP)
6th
Average Rating
0.0
Number of Reviews
0
Ranking in other categories
No ranking in other categories
RingCentral Fax
Ranking in Fax over IP (FoIP)
5th
Average Rating
0.0
Number of Reviews
0
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of February 2026, in the Fax over IP (FoIP) category, the mindshare of Esker Fax Server is 7.7%, up from 4.5% compared to the previous year. The mindshare of RingCentral Fax is 9.0%, down from 10.7% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Fax over IP (FoIP) Market Share Distribution
ProductMarket Share (%)
RingCentral Fax9.0%
Esker Fax Server7.7%
Other83.3%
Fax over IP (FoIP)
 

Comparisons

OpenText Fax vs Esker Fax Server Logo
OpenText Fax vs Esker Fax Server
Compared 64% of the time
Alcatel-Lucent OpenTouch Fax Center vs Esker Fax Server Logo
Alcatel-Lucent OpenTouch Fax Center vs Esker Fax Server
Compared 36% of the time
More Esker Fax Server Competitors
OpenText Core Fax vs RingCentral Fax Logo
OpenText Core Fax vs RingCentral Fax
Compared 40% of the time
OpenText Fax vs RingCentral Fax Logo
OpenText Fax vs RingCentral Fax
Compared 35% of the time
GFI FaxMaker vs RingCentral Fax Logo
GFI FaxMaker vs RingCentral Fax
Compared 25% of the time
More RingCentral Fax Competitors
 

Overview

Esker Fax seamlessly integrates with Microsoft® Exchange Server, allowing users to send, receive and manage faxes through their standard Outlook or Exchange inboxes. Users can send and receive faxes through their email interface, unifying their messaging activities under a single client.

Esker, Inc.

RingCentral Fax allows you to send and receive edit faxes online from many applications with secure faxing, fax alerts, and Microsoft Outlook integration.

RingCentral
 

Sample Customers

ProLift, CORE, Oneta, Craft Collective, TREK, CERAPEDICS, FIREPROOF, Hillcrest, Lam, NVIDIA, GOLDBELL
Top of the World Travel, Open Mortgage, True Blue Life Insurance
See our list of best Fax over IP (FoIP) vendors.

We monitor all Fax over IP (FoIP) reviews to prevent fraudulent reviews and keep review quality high. We do not post reviews by company employees or direct competitors. We validate each review for authenticity via cross-reference with LinkedIn, and personal follow-up with the reviewer when necessary.