标题（Title） 一般不超过80个字符
Find Open Source Alternatives to commercial software | Open Source Alternative - osalt.com
（90 个字符）
关键词（KeyWords）一般不超过100个字符
open source, open source software, search open source, search, find open source, find, open source alternative, free
（116 个字符）
描述（Description）一般不超过200个字符
osalt.com helps recommend a open source software alternative or replacement for commercial products and even shareware. Remember that open source software is also a freeware alternative.
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