gnokii is described as '"gnokii" is the name of a project that aims to develop tools and drivers for the mobile phones and devices. These tools include modem drivers, console tools, GUI applications etc'. There are three alternatives to gnokii for Windows, Linux, Mac and Symbian S60. The best alternative is Wammu, which is both free and Open Source. Other great apps like gnokii are Series60-Remote (Free, Open Source) and OxyFile (Freemium).
Wammu is a mobile phone manager using Gammu as its backend. It works with any phone that Gammu supports, including many models from Nokia, Siemens, and Alcatel. It has complete support (read, edit, delete, copy) for contacts, todo, and calendar. It can read, save, and
OxyFile is a file manager that gives access to the file structure of your mobile phone or smartphone on PC. Functionality OxyFile permits you to download and save photos, images, melodies, videos, ringtones, documents, applications, etc. on PC.