Developer utilities
The everyday developer toolbox — test regex, parse cron, convert colors and timestamps, calculate subnets and look up HTTP status codes. Every one of these 10 tools runs entirely in your browser, with no sign-up and nothing sent to a server.
All 10 developer utilities
Regex Tester
Test patterns with live matches
Cron Parser
Explain cron expressions
Color Converter
HEX ↔ RGB ↔ HSL
Unix Timestamp Converter
Epoch ↔ human date
IP Subnet Calculator
CIDR ranges & masks
HTTP Status Codes
Searchable status reference
MIME Type Lookup
Extensions ↔ content types
Sorting Algorithm Visualizer
See how sorts work
Open Source License Picker
Choose the right license
Code Snippet Manager
Save snippets locally
Why use ToolsVito developer utilities?
100% private
Regex patterns, cron strings and test data are processed locally in your browser — nothing is uploaded to a server.
Fast & live
Results update as you type — match regex, explain cron and convert values instantly, with no sign-up.
Works everywhere
Mobile, tablet or desktop — every tool is responsive and runs in any modern browser, offline-capable once loaded.