KStars
5.0粒星（滿分5粒星） （根據1條評論）
KStars is a Desktop Planetarium by KDE. It provides an accurate graphical simulation of the
類別： 教育
Celestia
4.0 out of 5 stars (based on 1 review)
Celestia – real-time 3D visualization of space The free space simulation that lets you explore
Artha
5.0粒星（滿分5粒星） （根據1條評論）
Artha is a free cross-platform English thesaurus that works completely off-line and is based on
paralleltext.io
3.0 out of 5 stars (based on 1 review)
Learn languages by reading
Leonflix
5.0 out of 5 stars (based on 2 reviews)
Leonflix is multi-platform desktop app for finding media, a modular search tool for content.
Awesome Indexed
4.0 out of 5 stars (based on 1 review)
A way to search over the original Awesome dataset. Great for discovery and finding alternatives.
Musicians without Borders
5.0粒星（滿分5粒星） （根據1條評論）
Musicians Without Borders (MWB) is an umbrella organization working with local organizations
科學中心
4.0 out of 5 stars (based on 2 reviews)
Sci-Hub is a website that provides free access to millions of research papers and books,
Standard Ebooks
5.0粒星（滿分5粒星） （根據1條評論）
The Standard Ebooks project is a volunteer driven, not-for-profit effort to produce a
Project Gutenberg
5.0粒星（滿分5粒星） （根據1條評論）
Project Gutenberg (PG) is a volunteer effort to digitize and archive cultural works, to