I built a free collection of 59 developer tools that run entirely in your browser — no signup, no paywall. Sharing in case it saves someone time.
Some highlights:
- JSON Formatter & Validator
- Regex Tester & Validator
- JWT Decoder
- Hash Generator (MD5, SHA256, SHA512)
- Cron Job Scheduler
- Base64 Encoder/Decoder
- UUID Generator
- Timezone Converter
- chmod Calculator
Everything works offline in the browser and supports 7 languages.
Check it out: https://universaltools.org/en
What tool would you want added next?
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