Up-to-date materials is an issue that concerns online higher education institutions and academics. The reason being that higher education is in need of identifying theoretically and methodologically robust sources. This is a first step and is key to the teaching-learning process due to the over-information associated with the Internet.

Some open resources allow online higher education institutions and academics to keep materials selected, updated, classified and shared with students at no economic cost. These resources allow access to information based on already established classifications. The most valued resources are those that have no cost; among the most interesting of these are:

del.icio.us is a free resource that allows us to keep browsing results safe. Del.icio.us allows you to create your own search engine so that the teacher can create a collection of links and organize these links. The resource search system facilitates an adapted process. It was directed by YouTube foundations and in 2015 it was acquired by DomainerSuite.

Diigo have been defined as a as a multi-use tool for the management of personal knowledge. The aim is to facilitate the flow of information. It allows you to collect websites by setting bookmarks, tags, collections of online pages, libraries and groups, among other options. Diigo was founded in 2005 and is currently a company of 12 people.

Crowdfire allows you to connect with Facebook, Twitter or Instragram in a way that links social networks with the search on the Internet. The choice of topics, such as management, allows access to a large number of news items that can be shared with just one click. The resource is available for mobile devices (iOS and Android). Crowdfire merged with private capital in 2010 and currently has 57 employees.

Feddly is one of the most used resources to select, save and classify web pages related to topics relevant to the user. The selection of topics of interest allows the user to access various sources, highlighting the most relevant ones. The option to follow groups within scope is also possible. Feddly is one of the first readers; It was founded in 2008 and experienced a great growth after the closing of Google Reader.

Buffer is a commercial resource but the free alternative is adequate to create a collection of relevant information. Accessible from a Facebook, Twitter or Linkedin account, although it requires confirmation of data. The resource is available for mobile devices (iOS and Android). Buffer was founded in 2010 and currently has a team of 70 people.

Academia is the social network most used by teachers of higher education. It allows users to create an account when sending an academic publication, an article or a communication, of which the academic is the author. The account of this resource is linked to the academic interests of each teacher so that it allows knowing the status of the publications of other authors from the same field of knowledge. It is one of the most used resources to know the number of citations of an academic article. Founded with private capital, currently has 21 workers.