𝗔𝗿𝗲 𝗮𝗹𝗹 𝗙𝗿𝗲𝗲 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗮𝗹𝘀𝗼 𝗢𝗽𝗲𝗻 𝗦𝗼𝘂𝗿𝗰𝗲?
Yes, because all Free / Libre #apps must guarantee that their source code is accessible by everyone. #FreeSoftware is a subset of #OpenSource software which grants additional fundamental rights to the end users through legal and technical means.