App comparison
Add up to 4 apps below to see how they compare. You can also use the "Compare" buttons while browsing.
GetApp offers objective, independent research and verified user reviews. We may earn a referral fee when you visit a vendor through our links.
Our commitment
Independent research methodology
Our researchers use a mix of verified reviews, independent research, and objective methodologies to bring you selection and ranking information you can trust. While we may earn a referral fee when you visit a provider through our links or speak to an advisor, this has no influence on our research or methodology.
Verified user reviews
GetApp maintains a proprietary database of millions of in-depth, verified user reviews across thousands of products in hundreds of software categories. Our data scientists apply advanced modeling techniques to identify key insights about products based on those reviews. We may also share aggregated ratings and select excerpts from those reviews throughout our site.
Our human moderators verify that reviewers are real people and that reviews are authentic. They use leading tech to analyze text quality and to detect plagiarism and generative AI.
How GetApp ensures transparency
GetApp lists all providers across its website—not just those that pay us—so that users can make informed purchase decisions. GetApp is free for users. Software providers pay us for sponsored profiles to receive web traffic and sales opportunities. Sponsored profiles include a link-out icon that takes users to the provider’s website.
Asterisk
5
26
4
14
3
3
2
1
1
0
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Open-source modular communication system
Last updated: March 2026
Asterisk Alternatives & Competitors (2026)
Top 3 free alternatives
0.3
Value for money
Starting price
Functionality
Agent Interface
4.8/5
Archiving & Retention
4.8/5
Access Controls/Permissions
4.7/5
Top Features
Automatic Call Distribution
5/5
Caller ID
5/5
Call Routing
5/5
0.2
Value for money
Starting price
Functionality
Call Conferencing
5/5
Archiving & Retention
4.8/5
Call List Management
4.8/5
Top Features
Automatic Call Distribution
5/5
Caller ID
5/5
Call Routing
5/5
0.3
Value for money
Starting price
Functionality
Agent Interface
5/5
Audio Calls
4.8/5
Activity Dashboard
4.7/5
Top Features
Automatic Call Distribution
5/5
Caller ID
5/5
Call Routing
5/5
0.5
Value for money
Starting price
0.2
Functionality
Activity/News Feed
5/5
API
5/5
Audio Calls
4.7/5
Top Features
Automatic Call Distribution
5/5
Caller ID
5/5
Call Routing
5/5
0.7
Value for money
Starting price
0.3
Functionality
Automated Routing
5/5
Auto-Dialer
4.7/5
Automatic Call Distribution
4.6/5
Top Features
Automatic Call Distribution
5/5
Caller ID
5/5
Call Routing
5/5
0.3
Value for money
Starting price
0.2
Functionality
Call List Management
4.8/5
Caller ID
4.7/5
Call Disposition
4.6/5
Top Features
Automatic Call Distribution
5/5
Caller ID
5/5
Call Routing
5/5
0.9
Value for money
Starting price
0.5
Functionality
Activity Tracking
5/5
Auto-Dialer
5/5
Automated Attendant
5/5
Top Features
Automatic Call Distribution
5/5
Caller ID
5/5
Call Routing
5/5
0.3
Value for money
Starting price
0.1
Functionality
Alerts/Notifications
4.4/5
Access Controls/Permissions
4.4/5
Automated Attendant
4.3/5
Top Features
Automatic Call Distribution
5/5
Caller ID
5/5
Call Routing
5/5
ULTATEL | Phone and Teleommunication Solutions For Business
Value for money
Starting price
Functionality
Access Controls/Permissions
5/5
Activity Dashboard
5/5
Activity Tracking
5/5
Top Features
Automatic Call Distribution
5/5
Caller ID
5/5
Call Routing
5/5
Value for money
Starting price
0.1
Functionality
Call Tracking
4.9/5
API
4.8/5
Call Recording
4.8/5
Top Features
Automatic Call Distribution
5/5
Caller ID
5/5
Call Routing
5/5
0.7
Value for money
Starting price
0.4
Functionality
Access Controls/Permissions
4.8/5
Agent Interface
4.8/5
Archiving & Retention
4.2/5
Top Features
Automatic Call Distribution
5/5
Caller ID
5/5
Call Routing
5/5
0.6
Value for money
Starting price
0.5
Functionality
Access Controls/Permissions
5/5
API
5/5
2-Way Messaging
4.3/5
Top Features
Automatic Call Distribution
5/5
Caller ID
5/5
Call Routing
5/5
0.2
Value for money
Starting price
0.1
Functionality
Automated Attendant
5/5
Call Conferencing
5/5
Call Screening
5/5
Top Features
Automatic Call Distribution
5/5
Caller ID
5/5
Call Routing
5/5
0.5
Value for money
Starting price
0.4
Functionality
Call Logging
4/5
Automated Attendant
3.8/5
Alerts/Notifications
3.7/5
Top Features
Automatic Call Distribution
5/5
Caller ID
5/5
Call Routing
5/5
0.7
Value for money
Starting price
0.4
Functionality
Alerts/Notifications
4.8/5
Activity Dashboard
4.7/5
Automated Attendant
3.3/5
Top Features
Automatic Call Distribution
5/5
Caller ID
5/5
Call Routing
5/5
0.8
Value for money
Starting price
0.6
Functionality
Caller ID
4.7/5
Alerts/Notifications
4.3/5
Call Conferencing
4.2/5
Top Features
Automatic Call Distribution
5/5
Caller ID
5/5
Call Routing
5/5
Value for money
Starting price
0.2
Functionality
Activity Tracking
5/5
Automatic Transcription
5/5
Call Center Management
4.8/5
Top Features
Automatic Call Distribution
5/5
Caller ID
5/5
Call Routing
5/5
0.8
Value for money
Starting price
0.5
Functionality
Activity Dashboard
5/5
Automated Attendant
5/5
Access Controls/Permissions
4.7/5
Top Features
Automatic Call Distribution
5/5
Caller ID
5/5
Call Routing
5/5
0.1
Value for money
Starting price
Functionality
Access Controls/Permissions
5/5
Activity Dashboard
5/5
Activity Tracking
5/5
Top Features
Automatic Call Distribution
5/5
Caller ID
5/5
Call Routing
5/5
1.0
Value for money
Starting price
0.9
Functionality
Auto-Dialer
5/5
Automated Attendant
5/5
Activity Dashboard
3.9/5
Top Features
Automatic Call Distribution
5/5
Caller ID
5/5
Call Routing
5/5