Easy-to-Read Language (E2R) is a controlled language variant that makes any written text more accessible through the use of clear, direct and simple language. It is mainly aimed at people with cognitive or intellectual disabilities, among other target users. Plain Language (PL), on the other hand, is a variant of a given language, which aims to promote the use of simple language to communicate information. German counts with Leichte Sprache (LS), its version of E2R, and Einfache Sprache (ES), its version of PL. In recent years, important developments have been conducted in the field of LS. This paper offers an updated overview of the existing Natural Language Processing (NLP) tools and resources for LS. Besides, it also aims to set out the situation with regard to LS and ES in Germany.

翻译：易读语言（E2R）是一种受控语言变体，通过使用清晰、直接且简洁的语言使书面文本更易理解，主要面向认知或智力障碍人群及其他目标用户。与之相对的简明语言（PL）则是特定语言的变体，旨在推广使用简单语言进行信息交流。德语包含其E2R版本"Leichte Sprache（LS）"和PL版本"Einfache Sprache（ES）"。近年来，LS领域取得了重要进展。本文系统梳理了现有面向LS的自然语言处理（NLP）工具与资源，并系统阐述了德国境内LS与ES的发展现状。