The Internet History Sourcebooks Project is a collection of public domain and copy-permitted historical texts presented cleanly (without advertising or excessive layout) for educational use.

The largest dictionary of modern language usage. It consist of over 400 modern languages, and 10 ancestral languages, with some 30 million individual entries across languages (including expressions, technical terminologies, and words). The languages included are read or spoken by over 95 percent of the world's population. The world's largest dictionary should be free to consult by all persons of the world, via the Internet.

Freelang offers a Free Offline Dictionary Program. Install the program once, then download as many languages as you need. You can browse the word lists, add your own words or create your own dictionary. All Freelang dictionaries are also available online, which means it's possible to look up a word without having to download the program and the wordlists.

The Timeline Index : People, Periods, Places and Events in a chronological context.
The Timeline Index is an ongoing project. We aim to provide a useful structure to help put information into context. It is a portal for everybody who is interested in a chronological overview of any subject.

Българският сайт за астрономия и телескопи

Тук ще намерите завидна колекция от ученически материали - записки, разработки, пищови, отговори на контролни/тестове и др.