This is a website where you can get detail information about all the plant and animal species in the world. As of now it contains about 327,807 articles and counting. You will also get detail information about the taxonomical classification of a particular species. It covers Animalia, Plantae, Fungi, Bacteria, Archaea, Protista and all other forms of life. I like this website because it has made a detail classification of species.
It is an online digital library of free contents. As of now it has about 776,826 textual contents and counting. It has an aim of hosting all forms of free textual information in many languages. This project started in June 2012. It contains only those information which are in the public domain or freely licensed. You can search the contents in alphabetical order, according to country, subjects or index of audio recordings etc.
It is a project started in Aug 2006 and is dedicated to learning resources, learning projects, and research for use in all levels, types, and styles of education. It includes all curriculum starting from pre-school to university, including professional training and informal learning. Teachers, students and authors from different geographical locations join here and write valuable contents.
Wikimedia common is vast digital online library of free images, sounds and media files. Presently it has a huge collection of 13,038,505 freely useable media files and still counting. This site was launched in Sep 2004. It has big collection of beautiful and free wallpapers which have categorized according to location, type, author, license, source etc. Day by day the popularity of this website is increasing.
This a online multilingual free dictionary which supports about 158 languages. This project started in Dec 2002 and since then it has been being contributed by different volunteers. If you search for a word it will show you whether it is a verb or noun, its etymology, its pronunciation, its meaning, its synonyms, its anagram and many more. It is a completely free dictionary and its accuracy is very good. It is widely used in many fields. Thanks to its contributors.
You may also like to read