Update The Source First Definition authored by Eron's avatar Eron
**Source First** is a programming ethos. It dictates that a programmer make a concerted effort to ensure that those who run his software can also reproduce the steps with which he created the software. **Source First** is a programming ethos. It dictates that a programmer make a concerted effort to ensure that those who run his software can also reproduce the steps with which he created the software.
All [Open Source](The Open Source Definition) licenses qualify as Source First. All [Open Source](FUTO's The Open Source Definition) licenses qualify as Source First.