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.
Under , click Select and choose your extracted .iso file.
Since this is a modified ISO from a third-party developer (Conan), use it at your own risk. Custom builds do not receive official Microsoft support and may require you to manually install drivers since many "plug-and-play" drivers are stripped to save space.
Unnecessary apps, telemetry, and background services are removed.
If you still choose to proceed:
He opened Notepad and typed a single line to save on his desktop:
The digital handle of the lead developer/modifier behind the Windows X-Lite community.
: The third evolution of the "Optimum" series—designed to be the perfect balance of speed and stability.
The desktop appeared. Total RAM usage: . Processes running: 19 . Leo laughed—a genuine, surprised laugh. His official Windows 11 used 4.2 GB at idle.
Since the file is compressed in .7z format, you'll need 7-Zip to extract the ISO. USB Drive: At least 8GB of space. Rufus: The best tool for creating bootable USB media. Step 1: Extract the ISO The filename indicates this is a compressed archive. Right-click the W11xLite226211992Optimum11V3FBConan7z file. Select 7-Zip > Extract Here .
Under , click Select and choose your extracted .iso file.
Since this is a modified ISO from a third-party developer (Conan), use it at your own risk. Custom builds do not receive official Microsoft support and may require you to manually install drivers since many "plug-and-play" drivers are stripped to save space.
Unnecessary apps, telemetry, and background services are removed.
If you still choose to proceed:
He opened Notepad and typed a single line to save on his desktop:
The digital handle of the lead developer/modifier behind the Windows X-Lite community.
: The third evolution of the "Optimum" series—designed to be the perfect balance of speed and stability.
The desktop appeared. Total RAM usage: . Processes running: 19 . Leo laughed—a genuine, surprised laugh. His official Windows 11 used 4.2 GB at idle.
Since the file is compressed in .7z format, you'll need 7-Zip to extract the ISO. USB Drive: At least 8GB of space. Rufus: The best tool for creating bootable USB media. Step 1: Extract the ISO The filename indicates this is a compressed archive. Right-click the W11xLite226211992Optimum11V3FBConan7z file. Select 7-Zip > Extract Here .
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 . 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.
No download. No credit card. No seat licenses. The API workbench that gets out of your way.
Start your 2-week free trial →No credit card required to get started