This page lists every known solution for the clue “Open Source” in Crossword Challenge. Because this clue can appear in different puzzles (levels) with different required answers, we first list all the answers, then show which one appears in each puzzle below.
Open Source Crossword Challenge Answers (All Variants)
Os
If more than one answer is listed, open your puzzle page below to confirm the one used there.
All Known Answers for Open Source Clue
Puzzle 140 — - Puzzle 253 —
- Puzzle 381 —
- Puzzle 524 —
- Puzzle 526 —
- Puzzle 636 —
- Puzzle 791 —
Where This Clue Appears
Last Checked: September 12, 2025