Tools
Free list and text tools
Every tool here runs entirely in your browser — nothing you paste is uploaded or stored. Start with the full list comparison tool for the five-way A/B comparison, or pick a focused tool below for a single task.
Alphabetizer
Paste a list and get it back sorted alphabetically, with natural number ordering.
Duplicates Remover
Paste a messy list and get back a clean, deduplicated version with a removal count.
CSV Comparer
Paste or import two CSV/TSV files and see exactly what's different between them.
Intersection & Union Calculator
Paste two lists and get the intersection, union, and both differences at once.
Text Diff
Paste two versions of a text and see exactly which lines were added, removed, or unchanged.
Invisible Character Detector
Scan text for zero-width spaces, non-breaking spaces, and other invisible characters.
Instagram Follower Checker
Paste your exported followers and following lists to see mutual follows and unfollows.
For developers & publishers