Digium Asterisk vs ShoreTel Sky [EOL] comparison

Digium and Mitel are both solutions in the Unified Communications category. Digium is ranked #4, while Mitel is ranked #11. Digium holds a 8.9% mindshare in UC, compared to Mitel’s 2.3% mindshare. Additionally, 75% of Digium users are willing to recommend the solution, compared to 80% of Mitel users who would recommend it.

Digium Asterisk

Read 5 Digium Asterisk reviews

437 Views
371 Comparison Views

75% willing to recommend

ShoreTel Sky [EOL]

Read 7 ShoreTel Sky [EOL] reviews

162 Views
133 Comparison Views

80% willing to recommend

Digium Asterisk

ShoreTel Sky [EOL]

Comparison Buyer's Guide

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Executive Summary

We performed a comparison between Digium Asterisk and ShoreTel Sky [EOL] based on real PeerSpot user reviews.

Find out what your peers are saying about Cisco, 3CX, Fortinet and others in Unified Communications.

To learn more, read our detailed Unified Communications Report (Updated: August 2025).

Buyer's Guide

Unified Communications

August 2025

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Helped 866,218 peers since 2012

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

Digium Asterisk

Ranking in Unified Communications

4th

Ranking in IP Telephony & Unified Communications

2nd

Average Rating

8.0

Number of Reviews

Ranking in other categories

No ranking in other categories

ShoreTel Sky [EOL]

Ranking in Unified Communications

11th

Ranking in IP Telephony & Unified Communications

6th

Average Rating

7.8

Reviews Sentiment

4.5

Number of Reviews

Ranking in other categories

No ranking in other categories

Mindshare comparison

As of August 2025, in the Unified Communications category, the mindshare of Digium Asterisk is 8.9%, down from 10.0% compared to the previous year. The mindshare of ShoreTel Sky [EOL] is 2.3%, up from 1.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Unified Communications Market Share Distribution
Product	Market Share (%)
Digium Asterisk	8.9%
ShoreTel Sky	2.3%
Other	88.8%

Unified Communications

Featured Reviews

Amjad-Khan

Technical Lead at a marketing services firm with 11-50 employees

Call recording, call logging, and the stability are pivotal features for our clients

We mainly replace old telephony equipment. If, for instance, there is an old Alcatel telephone system (digital or analog), and the customer asks us for a new option for IP telephony, then we offer both the Cisco- and Asterisk-based systems. We know the billing, we know the pricing of the items and what we can offer with both solutions. There are multiple factors involved when selecting a vendor * stability * support * features. If the product is stable, the product has good support, and it has enough features which we can offer to our clients, then the product is under our consideration.

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it_user269988

Office Manager with 51-200 employees

The Service Portal is useful feature, but there are occasional outages.

Phone Assistant is very useful, as is the Service Portal Occasional outages, but they're usually resolved very quickly. Customer Service: Customer service is generally responsive and courteous. Technical Support: Technical support folks are generally knowledgeable and helpful. We moved to VoIP…

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Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

No data available

By reviewers
Company Size	Count
Small Business	6
Large Enterprise	1

Comparisons

Kamailio SIP Server vs Digium Asterisk

Compared 34% of the time

Fortinet FortiVoice vs Digium Asterisk

Compared 27% of the time

Cisco Jabber vs Digium Asterisk

Compared 20% of the time

Cisco Unified Communications vs Digium Asterisk

Compared 19% of the time

More Digium Asterisk Competitors

No data available

Product Reports

Buyer's Guide

Unified Communications

August 2025

Download Digium Asterisk product report

Buyer's Guide

Unified Communications

August 2025

Download ShoreTel Sky [EOL] product report

Also Known As

Asterisk

No data available

Overview

Open source PBX system providing a complete telecommunications platform.

Digium

ShoreTel Sky have some useful features: ShoreTel Sky Communicator turns conference calls into active web sharing with video, presentation mode and more. ShoreTel Sky Mobility keeps you connected with deskphone features and functionality everywhere. ShoreTel Sky Advanced Application integrations amplify and enhance CRM and ERP functionality and ShoreTel Sky Contact Center improves the quality and quantity of profitable customer contacts.

Mitel

Sample Customers

Yahoo, Penn Univeristy of Pennsylvania, US Army, Google, eBay

Abacus Service Corporation, AIPAC, Airlie Womens Clinic, All Erection Crane And Rental Corporation, Aquent, Aspire, Bonobos, Brooklyn Brewery, Cable Scope, Caduceus

Buyer's Guide

Unified Communications

August 2025

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866,218 professionals have used our research since 2012.

See our list of best Unified Communications vendors and best IP Telephony & Unified Communications vendors.

We monitor all Unified Communications 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.