DevBox (www.dev-box-app) is a collection of little utilities (58 and growing) and cheat-sheets (15 and growing) that are useful during development:

- CRON: inspect CRON expressions in English, and it's next occurrences as a list or a calendar
- Generators: Lorem Ipsum, Password, QR Code, Color Palette
- KeyCode Info: Get the keycode of the pressed key
- Formatters: XML, HTML, GraphQL, JavaScript, YAML
- Encoders / Decoders: HTML Entities, Base64, URI
- Faker: generate fake data and get it as a JSON
- CSS Cursor Reference: Visually see and copy values to the clipboard
- Text Diff Checker: Check the difference between two texts
- IP information: Check your outside IP address
- CSV Previewer: Preview CSV files in a table
- SVG Optimizer: Optimize SVGs for size
- Image Compressor: Compress images
- JSON Viewer: View JSON files in an interactive way
- And many more...

There are 10 free tools and 5 free cheat-sheets, the other tools and cheat-sheets are available with a monthly or yearly subscription.