---
description: Side-by-side comparison of Asterisk vs OnSIP. Learn about each of the product's price, benefits and disadvantages. Choose the best software for your business in Singapore.
image: https://gdm-localsites-assets-gfprod.imgix.net/images/capterra/og_logo-e5a8c001ed0bd1bb922639230fcea71a.png?auto=format%2Cenhance%2Ccompress
title: Asterisk vs OnSIP Comparison - Capterra Singapore 2026
---

Breadcrumb: [Home](/) > [Business Phone Systems](/directory/31101/business-phone-systems/software) > [Asterisk \<span\>vs\</span\> OnSIP](https://www.capterra.com.sg/compare/60249/158706/asterisk/vs/onsip)

# Compare Asterisk vs OnSIP

Canonical: https://www.capterra.com.sg/compare/60249/158706/asterisk/vs/onsip

> Detailed comparison between Asterisk and OnSIP. Check ratings, reviews, pricing, and features to make the best decision for your business.

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## At a Glance

| Metric | Asterisk | OnSIP |
| **Overall rating** | 4.5/5 | 4.7/5 |
| **Total Reviews** | 44 | 78 |
| **Starting Price** | US$595.00 | US$18.95 |
| **Free Trial** | Yes | Yes |
| **Free Version** | Yes | No |
| **Deployment** | Cloud, SaaS, Web-based, Linux (Desktop), Android (Mobile), iPhone (Mobile), iPad (Mobile) | Cloud, SaaS, Web-based, Mac (Desktop), Windows (Desktop), Linux (Desktop), Android (Mobile), iPhone (Mobile), iPad (Mobile) |
| **Support** | Email/Help Desk, FAQs/Forum, Knowledge Base, Phone Support, 24/7 (Live rep), Chat | Email/Help Desk, FAQs/Forum, Knowledge Base, Phone Support, Chat |
| **Training** | In Person, Live Online, Videos | Live Online, Webinars, Documentation |

## Best for

### Asterisk

Telephony solution that enables businesses to manage activities across public switched telephone network (PSTN), voice over Internet Protocol (VoIP) networks, and more.

### OnSIP

Customize your VoIP communications with OnSIP’s easy-to-use solution. Add features when you need. No Contracts Required. Award-winning, US-based support. Free phones for 5+ Users. Free  trial.

## Key features

### Asterisk

- API
- Automatic Call Distribution
- Call Center Management
- Call Logging
- Call Monitoring
- Call Recording
- Call Reporting
- Call Routing
- Call Transfer
- Caller ID
- Communication Management
- Contact Management
- Employee Directory
- Mobile Access
- PBX
- SMS Messaging
- Video Conferencing
- Virtual Call Center
- VoIP Connection
- Voice Mail

### OnSIP

- API
- Automatic Call Distribution
- Call Center Management
- Call Logging
- Call Monitoring
- Call Recording
- Call Reporting
- Call Routing
- Call Transfer
- Caller ID
- Communication Management
- Contact Management
- Employee Directory
- Mobile Access
- PBX
- SMS Messaging
- Video Conferencing
- Virtual Call Center
- VoIP Connection
- Voice Mail

## Links

- [View Asterisk Profile](https://www.capterra.com.sg/software/60249/asterisk)
- [View OnSIP Profile](https://www.capterra.com.sg/software/158706/onsip)
- [View Original Comparison](https://www.capterra.com.sg/compare/60249/158706/asterisk/vs/onsip)

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