TextArray vs regex101
Updated September 1, 2026
regex101 describes itself in three words on its own header — "build, test, and debug regex" — and that is exactly what it is. A flavour selector switches between engines (PCRE2, and the others in the dropdown), the pane on the right explains what each part of the pattern matched, and the debugger walks the engine step by step. For anyone who writes regular expressions seriously it is the reference tool.
TextArray is not trying to replace it. It has a regex explainer, a pattern builder that infers an expression from examples, an escaper and a glob converter — the parts of regex work that fit a single-purpose tool — and then several hundred other tools that have nothing to do with regex.
Where regex101 is strong
- A real step debugger and a match explainer, which is the thing that makes a hard pattern tractable.
- Several engine flavours side by side, so a pattern can be checked against the language it will actually run in.
- A saved-pattern library with permalinks, which is how regex questions get asked and answered on the rest of the web.
The honest summary is that these two overlap on one page each. If your job today is to work out why a pattern is backtracking, regex101 is the better tool and it is not close — it has a debugger and TextArray does not. What TextArray adds is the other direction: paste a few example strings and it proposes a pattern, or paste a pattern and it reads back in prose what each group does.
The rest of the difference is scope and funding. regex101 carries a sponsor line and offers Pro and Enterprise upgrades, with some features (Benchmark Regex, Format Regex among them) marked Pro. TextArray has no tier, no sponsor and no account, and the tool you need next — a JSON formatter, a diff, a hash — is on the same site rather than a different one.