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.
Lessons are organized into "Files" (units) that focus on specific themes.
: Reading texts and discussion prompts are regularly updated. They cover modern themes like digital wellness, the gig economy, and global sustainability, which keeps student engagement high. Practical Study and Teaching Tips For Educators
: Complete corresponding workbook activities immediately after finishing a Student's Book lesson to lock structural rules into your long-term memory.
A mammoth resource for educators, including lesson plans, answer keys, photocopiable activities (grammar, vocabulary, communicative), and cultural notes. The 4th edition teacher resources are significantly more robust than previous versions.
Choosing the right coursebook can make or break the language learning experience. For decades, the series by Christina Latham-Koenig and Clive Oxenden has been a global benchmark in English Language Teaching (ELT). Published by Oxford University Press (OUP), the English File 4th Edition Intermediate is specifically engineered to bridge the gap between basic conversational ability and true linguistic independence at the CEFR B1 level .
Lessons are organized into "Files" (units) that focus on specific themes.
: Reading texts and discussion prompts are regularly updated. They cover modern themes like digital wellness, the gig economy, and global sustainability, which keeps student engagement high. Practical Study and Teaching Tips For Educators
: Complete corresponding workbook activities immediately after finishing a Student's Book lesson to lock structural rules into your long-term memory.
A mammoth resource for educators, including lesson plans, answer keys, photocopiable activities (grammar, vocabulary, communicative), and cultural notes. The 4th edition teacher resources are significantly more robust than previous versions.
Choosing the right coursebook can make or break the language learning experience. For decades, the series by Christina Latham-Koenig and Clive Oxenden has been a global benchmark in English Language Teaching (ELT). Published by Oxford University Press (OUP), the English File 4th Edition Intermediate is specifically engineered to bridge the gap between basic conversational ability and true linguistic independence at the CEFR B1 level .
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