Store your keys once. Build request templates with fillable fields. Get answers in a clean split-screen interface. No $14/seat pricing. No download.
The popular API tools come with baggage. DevBook skips all of it.
Postman charges per seat, per month. Teams of 5 pay $70/mo for what should be a developer utility. DevBook is free — no seats, no tiers, no surprises.
Postman's Electron app ships 300MB+ and launches like it's loading an IDE. DevBook is a web app. Open a tab, start working. Close it when you're done.
Postman syncs your collections, keys, and environments to their servers. DevBook stores your API keys in your own account. Your requests stay yours.
Xprinter provides a dedicated Linux Driver package for 80mm thermal receipt printers.
Depending on your setup, you may need one of the following specific driver packages:
The universal POS Printer Driver V7.77 supports all major Windows versions.
Specialized drivers are available for Mac OS X; users typically select the "POS 80" series during setup.
SDKs and specific Android drivers are available for mobile POS integration. How to Install the Xprinter XP-S200M Driver Follow these steps to set up your printer correctly: XP-S200M/ XP-S260M/ XP-S300M - Receipt Printer - Xprinter
The official can be found on the Xprinter Official Products Page , which hosts drivers for Windows, Mac, and Linux systems. Download Links by Operating System
Xprinter provides a dedicated Linux Driver package for 80mm thermal receipt printers.
Depending on your setup, you may need one of the following specific driver packages:
The universal POS Printer Driver V7.77 supports all major Windows versions.
Specialized drivers are available for Mac OS X; users typically select the "POS 80" series during setup.
SDKs and specific Android drivers are available for mobile POS integration. How to Install the Xprinter XP-S200M Driver Follow these steps to set up your printer correctly: XP-S200M/ XP-S260M/ XP-S300M - Receipt Printer - Xprinter
The official can be found on the Xprinter Official Products Page , which hosts drivers for Windows, Mac, and Linux systems. Download Links by Operating System
No collections. No environments. No workspaces. Just the parts of API testing you actually use.
Paste your keys into the vault — Stripe, OpenAI, Twilio, whatever you use. Reference them with a variable name across every template. One entry, everywhere.
Define your HTTP request and mark dynamic parts with {{placeholders}}. DevBook generates a fillable form. No raw JSON editing, no config files.
Fill in the blanks, hit send, see your response instantly. Every template is saved and searchable. Build a library of the API calls your workflow depends on.
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