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curl vs ain: catalog facts
curl	ain
Free The open-source application is available without a license fee.	Free Free to download.
Windows, macOS, Linux, Command line	Windows, macOS, Linux, Command line
Speaks dozens of protocols with precise control over every request detail Present on almost every system, so scripts written with it run anywhere	Requests kept as plain-text files in folders Environment variables and .env file support
The option surface is vast and the manual page is enormous No interface for organising or replaying saved requests	Terminal only, no graphical interface Smaller community than the GUI clients it replaces
Downloadable app	Downloadable app
Open source	Closed source
License: curl	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.