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AstroGrep vs grepWin: catalog facts
AstroGrep	grepWin
Best for: Searching source code and other files from a Windows desktop	Best for: Windows users who need bulk regex search and replace in files
Free Freely distributable under the GNU GPL.	Free Free and open source under the GPL-3.0 licence.
Windows	Windows
Searches files with regular expressions Shows context around matches All 3 strengths for AstroGrep Searches files with regular expressions Shows context around matches Remembers recently used paths	Regular expression search and replace across many files Explorer context menu entry for quick searches All 4 strengths for grepWin Regular expression search and replace across many files Explorer context menu entry for quick searches Saved presets for common expressions Filters by file size and type
Windows only	Windows only Requires Windows 10 22H2 or later
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: GPL-3.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Offline features available
Official website Full listing and sources Sources for AstroGrep astrogrep.sourceforge.net Catalog checked October 8, 2026	Official website Full listing and sources Sources for grepWin tools.stefankueng.com/grepWin.html Catalog checked October 2, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.