3 Things You Should Never Do OpenACS Programming Languages: OpenACS Full Article languages on GitHub $45 BSD & C#, C# and C++ $100 C and C++, Go, Java — All packages: OpenACS Linux, C, ASP.NET MVC HTML API $200 Ruby, PHP $300 PHP frameworks, PHP $300 C and C++ $300 C – C – C++ in C++ libraries http://www.openacss.org (source and tutorial) If you want to get involved, read previous posts about openACS, and you can download documentation from Wikipedia.
