Esperanto
Sources and licences
Every fact on this site comes from a source you can check. Here is where our information comes from and how you may reuse it.
This site is an independent, free guide to Esperanto. Grammar explanations follow the official foundation of the language and the most complete modern reference grammar. Facts about history, speakers and culture link to their sources on each page.
Reference works for grammar and vocabulary
| Source | What it is | Licence |
|---|---|---|
| Fundamento de Esperanto (1905) | The untouchable foundation of the language: the 16-rule grammar, the Ekzercaro and the Universala Vortaro | Public domain |
| Akademio de Esperanto | The language academy: official additions to the vocabulary and decisions on usage | Official texts |
| Plena Manlibro de Esperanta Gramatiko (PMEG) by Bertilo Wennergren | The most complete modern description of Esperanto grammar | Free to read online |
| Reta Vortaro (ReVo) | Open monolingual Esperanto dictionary with translations into many languages | GPL |
| Wiktionary | Open multilingual dictionary | CC BY-SA |
| Tatoeba | Example sentences with translations | CC BY 2.0 FR |
| Wikimedia Commons (Lingua Libre) | Pronunciation recordings by volunteers, also used in Wiktionary; each file's page names the speaker; the lessons, the flashcards and the Saluton app play copies of these files from this site (list of files with links) | Mostly CC BY-SA 4.0 |
| Wikidata | Structured data about Esperanto | CC0 |
When we use data from these projects on a page, the page names the source.
How we write
- Every page answers one question directly and links to the sources of its facts.
- Disputed numbers, such as the number of Esperanto speakers, are shown as a range with each estimate, its method and its year.
- Examples are checked against the Fundamento and PMEG. Pages show the date of their last update.
Found a mistake? Every page has a date and sources so you can check us; corrections make the guide better for everyone.
Reusing our content
Unless a page says otherwise, the text of this site is available under the Creative Commons Attribution-ShareAlike 4.0 licence. You may copy, translate and adapt it, also commercially, as long as you credit this site with a link and share your version under the same licence. Data taken from other projects keeps its original licence, listed above.
Sources
If Esperantopedia helped you, you can support it.