CosmosDev
Fast, free developer utilities without clutter
What is CosmosDev?
CosmosDev is a growing collection of free developer tools built for speed, simplicity, and productivity. It includes utilities like JSON Formatter, JWT Decoder, Base64 Encoder/Decoder, QR Generator, UUID Generator, Password Generator, and more. Built as a solo developer project with a focus on clean UI, fast performance, and an easy developer experience.
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