Project Gutenberg - Project Gutenberg is one of the oldest and largest sources of free ebooks.

古登堡计划—古登堡计划是一个古老而大型的免费电子书资源。

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Gutenberg project, electronic book.

古腾堡计划，电子书。

youdao

Project Gutenberg and Archive.org are the two main online repositories of downloadable texts.

BBC: Free e-books provide unlimited holiday reading

During the lifetime of Project Gutenberg alone, the average time a book stayed in copyright in America rose from 30 to almost 100 years.

ECONOMIST: Michael Hart

Now, this isn't just a consumer tablet -- Spark's aimed at "those who love writing great software... using the typical Linux tools" -- but it will offer access to ebooks from Project Gutenberg, plus Qt and QML apps, too.

ENGADGET: Meet Spark, the 200 euro slate packing Linux-based Plasma Active UX