Li-Fi stand for Light Fidelity is a fully networked wireless communication technology. It is similar to Wi-Fi technology. It is a visible light communication (VLC) which runs on wireless communication at high speeds. Its speed is up to 224 gigabits per seconds. Li-Fi use common household LED (light emitting diodes) light bulbs to enable data transfer. During experiment, it is measured that Li-Fi is 100 times faster as compared to Wi-Fi.

CRM stand for Customer Relationship Management it is used for record customer contact no. customer transactions, customer sales purchase history and detailed customer information for future perspective. In addition to CRM, Open source CRM is a free of cost customer relationship management solution. Any one modify open source CRM according to their needs. No need to buy expensive commercial CRM

Bugzilla is an open source bug tracking and testing tool. It is developed by the Mozilla project. It's released under the license of the Mozilla Public License. It is written in Perl language and supported cross platform. It empowers individual and groups of developers to track bugs in their product effectively. It can be used for system administration, ICT support queues, bug tracking of software and

Let's Encrypt is a free, automated and open certificate authority (CA). It is provided as a service by the Internet Security Research Group (ISRG). It is written in the Python language. By using sudo command you install the certificates on your server. It is compatible with Apache and Nginx. Therefore, you need to just install it on your server if you are using Apache or Nginx.

By using social networks and other special commerce sites, was always the threat of insecurity. To secure privacy in data transmission need optional secure connection. Now a day many well known sites like Facebook, twitter, ICTBroadcat are utilizing HTTPS to protect secret information. What is HTTPS and how its working lets see.

The trend of low cost small PCs computer is grow in early 2010. The low cost small PCs is not doubt most successful invention in the history of computing. Due to low price and small in size, small PC market have been getting a lot of attention from consumers and industry owners.When we talk about low cost and small size PCs, two names comes in mind Raspberry Pi and CHIP.