 Link | Skype | Telegram | cotap | |
|---|---|---|---|---|
| Logo |  |  | ||
| Users arround the world | 800 million | no information | ||
| Website | whatsapp.com | skype.com | telegram.org | cotap.com |
| Features | ||||
| Instant messaging | Yes | Yes | ||
| Group chat | - Limited to 5 users | Yes | ||
| Video chat | Yes | - 100 minutes per company | ||
| Calls | Yes | - 100 minutes per company with Basic | ||
| File transfer | Yes | Yes | ||
| Registration | ||||
| Without phone number | No | Yes | ||
| Email + Password | No | Yes using corporate email domain | ||
| Sahre account on multiple devices | No | Yes | ||
| Plateforms | ||||
| Android Support | Yes | Yes | Yes | Yes |
| IOS | Yes | Yes | ||
| macOS | Yes | Yes | Yes | Yes using a web browser |
| Windows | Yes | Yes | Yes | Yes using a web browser |
| Windows phone | Yes | - coming 2016 | ||
| Sharing features | ||||
| Share photo | Yes | Yes | ||
| Share video | Yes | Yes | ||
| Share voice message | Yes | Yes |