41 developer tools, one fast app.
Format JSON, test a regex, decode a JWT, run SQL, preview Markdown, convert time zones. Everything you reach for every day, in one native window that opens instantly.
Free to try. 6 tools are always free.
Why Tackle Box
Small, quick and private
A real desktop app, not a browser tab. No account, no sign-in and no ads.
Native and fast
Compiled for each platform, so it launches in a blink and handles big files without breaking a sweat.
Your data stays yours
Everything runs on your computer. What you paste into a tool is never uploaded anywhere.
Mac, Windows and Linux
The same toolbox on every computer you use, with light and dark appearance that follows your system.
Find tools instantly
Type to filter the list, mark favorites with a heart, and Tackle Box remembers where you left off.
Real code editors
Syntax highlighting for JSON, XML, HTML, SQL and Markdown, with live results as you type.
Tools that work together
Send a query to the SQL formatter, or open JSON in the tree viewer, with a single click.
Screenshots
A closer look
All 41 tools
Everything in the box
More tools are added with every update.
Converters 3
- Cron ParserExplain a cron expression in plain English and list when it runs next
- Number Base FreeConvert numbers between decimal, hex, binary, octal and any base up to 36
- Unix TimeConvert between Unix timestamps and readable dates
Database 2
- SQL FormatterPretty-print or minify SQL, with keyword case and indent options
- SQL QueryOpen a SQLite database and run SQL against it, with results in a table
Design 3
- Color Palette GeneratorBuild matching color schemes from one color, with copyable hex values and CSS
- Color PickerPick a color and convert it between hex, RGB, HSL and HSV
- Contrast CheckerCheck text and background contrast for light and dark mode against the WCAG guidelines
Encoding 5
- Backslash EscapeEscape and unescape strings for JSON, C, Python, regex, shell and SQL
- BarcodesCreate QR codes and Code 128 barcodes; read them from images or the camera
- Base64 FreeEncode text to Base64 or decode Base64 back to text
- HTML EntitiesEncode and decode HTML entities: named, decimal and hex
- URL ToolsEncode, decode and take apart URLs and query strings
Fun Stuff 3
- ASCII Art FreeTurn an image into text characters
- Fractal Explorer FreeExplore the Mandelbrot, Julia and Burning Ship fractals
- Game of Life FreeConway's cellular automaton with classic starting patterns
Generators 5
- Dice RollerRoll dice using standard notation like 2d6+3
- GUID GeneratorGenerate random version 4 GUIDs (UUIDs) in several formats
- Lorem IpsumGenerate placeholder text in paragraphs, sentences or words
- Random NumbersGenerate random whole numbers in a range, optionally without duplicates
- Random String GeneratorMake passwords, tokens and other random strings
JSON 3
- JSON and CSVConvert JSON to CSV and CSV to JSON, with nested data flattened
- JSON Formatter FreePretty-print, minify, validate and sort JSON
- JSON ViewerExplore JSON as a collapsible tree and search it
Network 2
- cURL to CodeTurn a cURL command into JavaScript, Python, PHP, Go, C#, Java, Swift, Xojo or PowerShell
- REST ClientSend HTTP requests, inspect the response, import and export cURL commands
Security 2
- Hash GeneratorMD5, SHA-1, SHA-2, SHA-3 and HMAC digests of text or files
- JWT DebuggerDecode JSON Web Tokens, read their claims and check HMAC signatures
System 2
- Clipboard InspectorSee every format on the clipboard, and copy it back as plain text
- System InfoOperating system, CPU, display and network details for this computer
Text 8
- HTML PreviewEdit HTML with syntax highlighting and see it rendered live, at desktop, tablet or phone width
- Line Sort and DedupeSort lines, remove duplicates and blank lines, trim, reverse or shuffle
- Markdown PreviewWrite Markdown and see it rendered as you type, copy or save the HTML
- RegExp TesterTry regular expressions with highlighted matches, groups and replacement
- String Case ConverterConvert text to camelCase, snake_case, kebab-case, Title Case and more, all at once
- String InspectorCount characters and bytes, and reveal invisible characters, code points and encodings
- Text DiffCompare two texts line by line and see what changed
- XML FormatterPretty-print or minify XML and check that it is well-formed
Time 3
- Date CalculatorDays between dates, add or subtract time, and facts about a date
- Time Zone ConverterConvert a date and time between time zones, with working hours at a glance
- World ClockLive clocks for the cities you choose
Download
Try it free
The demo never expires. It includes 6 tools: ASCII Art, Base64, Fractal Explorer, Game of Life, JSON Formatter and Number Base. A license unlocks the rest.
Pricing
Simple, one-year licenses
A license unlocks all 41 tools and includes one year of updates. Pick one platform for $19, or get all three for $29.
Prices in US dollars. Taxes may be added at checkout depending on where you live. Every purchase has a 30-day money-back guarantee.
Questions
Frequently asked
What does the free demo include?
The demo has no time limit. It includes ASCII Art, Base64, Fractal Explorer, Game of Life, JSON Formatter, Number Base. The other tools show a lock until you enter a license.
How do licenses work?
You receive a license key by email. Enter it in Tackle Box and every tool unlocks. A license covers the platforms you bought, either one platform ($19) or all three ($29), and includes one year of updates.
What happens when updates end?
Your license includes one year of updates. If it lapses, the version you already have keeps working in full. Newer versions run in demo mode until you renew.
Can I get a refund?
Yes. If you are not happy for any reason, ask within 30 days of buying and you get your money back. See the refund policy.
Does Tackle Box send my data anywhere?
No. Tools run on your computer. The only network traffic is what you ask for, such as a request you send from the REST Client.
Which systems does it run on?
macOS 12 or later (Apple silicon and Intel), Windows 10 and later (64-bit), and 64-bit Linux with GTK 3.
I have an idea for a tool.
Great. Email paul@logicalvue.com. New tools are added all the time.