Differences between the types of software

   
    We can aalso differentiate between the following types of software:

• Free software: Anyone can use, modify, copy and distribute this software. It is also open source. 

• Proprietary software: Users need special permision or a licence to use, modify, copy or distribute this software.
• Commercial software: The owner distributes and sells this sofware for a price.

• Freeware: This software does not cost anything. It can be copied and distributed, but it cannot be modified.
• Public domain sofware: The author makes this software avaible to everyone at no cost.

Wikis

     A wiki is a collection of web pages that visitors can edit, modify or expand. In this way, the content grows quickly with the contributions of the people working on it.

Like other web pages, wiki content must be stored on a server. Nomally, this would require playing for a hosting service, but many use free online service instead. The most popular examples are Wikispaces and PBWorks.

   

Vertical social networks

Vertical social networks: The users of vertical networks form communitiees who have similar reasons for using the appication.


Sharing professional information: Likendin is the most popular network for all kinds of professionals.

Sharing general ninformation: With FriendFeed, people can create private groups to share information about project, organise events and exchange photos or expeeriences with their friends.

Sharing photos: Instagram, Flick, Pinterest and picassa are popular.

Sharing videos:  YonTube, Dailymotion and Vimeo are common examples.



              

Live streaming: Skype, Twitch.tv, Livestream and upstream.tv are often used.

     

                                                       

Blogs

   Weblogs or blogs are a special type of web page. They were originally used as online diaries for people      to share their personal experiences.

   Blogs have the characteristics which made them interesting:

• The same blog can be shared by various bloggers working together as a team.
• Blogs can include hyperlinks to photos, audio recordings or videos.
• we can use blogs to make daily reports about a project and receive helpful feedback from other people.
• Businesses can use blogs to improve their customer service, by quickly responding to questions or complaints about their products.

     Some of the most popular blogging services are Blogger, Wordpress and Tumblr.