Esmska

Program for sending SMS over the Internet. It uses publicly available web gateways and sends messages through them.

This way it can be much more comfortable than using a web browser or a mobile phone.
Main features:
- Send SMS through various gateways (local or international, free or paid)
- Supports all common operating systems (Linux, Windows, Mac OS, etc.)
- Free, under open-source licence GNU AGPL3
- Import contacts from vCard files or third-party programs (DreamCom)
- Send SMS to multiple recipients at once
- History of sent messages
- Pluggable gateway system - easy to provide support for more gateways directly by users
- Extensive possibilities of changing appearance