Delphi, known officially as Embarcadero Delphi, is a proprietary programming language and software development kit (SDK) from Embarcadero Technologies.
Delphi is a mature product, with RAD studio as IDE.
Its primary strength is that it compiles incredibly quickly, meaning that Delphi applications with a relatively large codebase can be compiled and run on a machine with limited resources. (和 electron 这种吃硬件资源的免费 product 正好相反)
https://www.whoishostingthis.com/resources/delphi/https://www.embarcadero.com/products/rad-studioTrusted by over 3 million developers worldwide 二十年的口碑应得三百万用户
https://www.embarcadero.com/products/rad-studio/demo-request中老年程序员的最爱,维护不得不维护的历史代码 (仅仅因为重写软件的人工费用比买 Delphi license 并继续维护历史代码的费用贵)
https://www.quora.com/Why-are-Embarcadero-Delphi-and-RAD-Studio-so-expensive-