Every developer has a tab problem.
You're in the middle of debugging an API response and you need to format some JSON. So you open a new tab. Then you need to decode a JWT. Another tab. Test a regex. Another tab. Check a cron expression. Another tab.
By the time you've solved the problem you have eight tabs open, you've pasted sensitive data into four different websites you've never heard of, and you're not entirely sure any of them are private.
I've experienced this firsthand.
So I built DevCrate
DevCrate is a suite of developer tools that run 100% in your browser. No server ever sees your data. No login required. No ads. No dark patterns.
Everything stays on your machine — your JWT tokens, your SQL queries, your regex patterns, your API payloads. All of it.
What's live right now
Twelve tools and counting:
- JSON Transformer — format, minify, convert to YAML or CSV
- JWT Debugger — decode and inspect tokens with claims table
- Regex Studio — live match highlighting with flag toggles
- SQL Formatter — supports PostgreSQL, MySQL, SQLite, BigQuery
- REST Client — send HTTP requests and inspect responses
- WebSocket Tester — connect, send, and inspect frames live
- Base64 / Hash — encode, decode, MD5, SHA-256, SHA-512
- Cron Builder — visual editor with human-readable output
- URL Inspector — parse, encode, decode any URL
- Diff Tool — compare text and JSON line by line
- Timestamp Converter — Unix to date and back, with timezones
- HTML Formatter — format and beautify HTML instantly
What makes it different
A lot of developer tool sites exist. Most of them:
- Show ads between every tool interaction
- Require an account to save anything
- Send your data to a server without telling you
- Were built quickly to rank for keywords, not to be genuinely useful
DevCrate was built the other way around. I started with the tools I actually use every day and built each one to be genuinely good at its job — not just good enough to get traffic.
The privacy-first approach isn't a marketing line. It's a technical decision baked into how every tool works. There is no server processing your input. There is no database storing your queries. The code runs in your browser and nowhere else.
What's coming
The public roadmap lives at devcrate.net/roadmap. The short version:
- Export results as files (Q2 2026)
- Session history so you never lose work (Q2 2026)
- Saved configurations (Q2 2026)
- User accounts and cloud sync (Q3 2026)
- Team workspaces (Q4 2026)
- CLI and API access (Q4 2026)
The pricing model
DevCrate is free to start — genuinely free. The free tier gives you full access to all twelve tools with reasonable usage limits.
Pro is $19/month for power users who need higher limits, export, and history. Team is $49/month for when we build out the collaboration features.
No surprise upsells. No modals at 2am telling you your trial expired.
Try it
devcrate.net — no signup, no card, just open it and use it.
If something's broken, missing, or could work better — the contact form on the about page comes straight to me. I truly read every message.