Side by side
3CX vs Rainbow
Both stand on unified communications software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan WebWindowsLinux+3
Visit 3CX Free plan AndroidAPIiPhone+3
Rainbow brings messaging, collaboration, and telephony together, with several deployment options and plans. Check the plan’s user, storage, and meeting limits against your needs.
Visit RainbowThe facts
| 3CX | Rainbow | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Web, Windows, Linux, iPhone, Android, Mac | Android, API, iPhone, Mac, Web, Windows |
| Lowest paid plan | Basic: $300 a year | Rainbow Business: €2 per user a month |
| Plans published | 4 | 3 |
| Maker | 3CX | Not published |
| Website | 3cx.com | openrainbow.com |
| On unified communications software | #1 of 28 | #5 of 28 |
3CX: what it does well
Rainbow: what it does well
- Persistent one-to-one and group chat, plus task management.
- Cloud and hybrid telephony options are available.
- Integrations include Microsoft Teams and calendar services.
- Available in more than 75 countries and 22 languages.
- Business and Enterprise include 24/7 support and an uptime SLA.
What to know first
- Essential limits storage to 1 GB.
- Business includes one-to-one audio, video, and screen sharing.
- Enterprise audio, video, and screen sharing supports up to 10 users.
- The listed meeting participant limit is 2 participants.