This product was not featured by Product Hunt yet. It will not be visible on their landing page and won't be ranked (cannot win product of the day regardless of upvotes).
Compare Lists
Compare two lists instantly. Private, offline, free.
Compare two lists and instantly see what's only in A, only in B, and shared by both. Built-in templates for Instagram followers, Excel/CSV columns, database IDs, and inventory lists. 100% client-side; nothing you paste is ever uploaded, no login required. Works offline, has a Chrome extension, and includes a visual diff, regex splitting, and find & replace. Free, no signup.
Hey Product Hunt 👋
I built CompareLists after one too many VLOOKUP detours in Excel just to figure out what changed between two versions of a list.
What started as a quick personal script turned into a proper tool once I realized most "list comparison" sites out there either make you sign up, upload your data to their server, or both, which felt like overkill (and a privacy risk) for something this simple.
So CompareLists runs 100% in your browser. Nothing you paste or upload ever touches a server. It works offline, has a Chrome extension for comparing lists without leaving your tab, and includes ready-made templates for common cases, Instagram followers, Excel/CSV columns, database IDs, email lists.
Some things I'm proud of under the hood: a visual diff view, regex-based splitting/find-and-replace, and a share-link feature if you need to send results to someone else.
Would love your feedback, especially on what other templates or comparison types would be useful. What do you usually end up comparing manually that you wish was instant?
Thanks for checking it out! 🙏
Love that this runs 100% client-side; huge plus for data privacy when dealing with internal IDs or client exports. Firing up a spreadsheet just to do a basic diff gets tedious fast. Clean UI too. Congrats on the launch!
About Compare Lists on Product Hunt
“Compare two lists instantly. Private, offline, free.”
Compare Lists was submitted on Product Hunt and earned 3 upvotes and 2 comments, placing #83 on the daily leaderboard. Compare two lists and instantly see what's only in A, only in B, and shared by both. Built-in templates for Instagram followers, Excel/CSV columns, database IDs, and inventory lists. 100% client-side; nothing you paste is ever uploaded, no login required. Works offline, has a Chrome extension, and includes a visual diff, regex splitting, and find & replace. Free, no signup.
Compare Lists was featured in Chrome Extensions (52.8k followers), Productivity (661.2k followers) and Developer Tools (519.8k followers) on Product Hunt. Together, these topics include over 261.7k products, making this a competitive space to launch in.
Who hunted Compare Lists?
Compare Lists was hunted by Codeblogmoney. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how Compare Lists stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
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