Bellows — Developer Tools
Developer Tools
41 developer tools in one native Mac app — JSON, JWT, Base64, hashes, and more.
View on the App StoreBest Developer Tools App for Mac
Switching between browser tabs, CLI scripts, and bookmark folders for basic dev utilities wastes more time than the actual coding.
Read moreJSON Formatter for Mac — Native App, Works Offline
Pasting unformatted JSON into a browser tool to read it is a workflow you repeat dozens of times a week without questioning it.
Read moreBase64 Encoder and Decoder for Mac
Decoding Base64 strings through Terminal commands or web tools interrupts your flow every time you hit an encoded value in logs or configs.
Read moreDevToys Alternative for Mac
DevToys brought the all-in-one developer toolkit idea to Windows, but the macOS version never matched the native experience Mac users expect.
Read moreJWT Decoder for Mac — Paste and Inspect
Pasting JWTs into jwt.io to read their claims works until you realize you just sent a valid token to a third-party website.
Read moreURL Encoder and Decoder for Mac
Reading percent-encoded URLs full of %20 and %3D is like reading a sentence where every space is replaced with a number.
Read moreHash Generator for Mac — MD5, SHA-256, and More
Verifying file integrity or generating password hashes through Terminal commands means remembering different flags for each algorithm every time.
Read moreRegex Tester for Mac — Native and Offline
Writing regular expressions without live feedback is like editing code without syntax highlighting — technically possible, but unnecessarily painful.
Read moreColor Picker with Hex and RGB for Mac
Converting between hex codes, RGB values, and HSL notation by hand is error-prone and unnecessary when you do it multiple times a day.
Read moreUUID Generator for Mac — Instant Copy
Generating UUIDs through Terminal or code snippets adds friction to a task that should be completely mindless.
Read moreAll-in-One Developer Tools for Mac — 41 Tools, Fully Offline
Browser tabs for encoding, Terminal windows for hashing, bookmarks for formatting — developer micro-tasks are scattered across a dozen places.
Read moreJSON Validator for Mac — Find Errors Instantly
A missing comma or a stray bracket can break an entire config file, and finding it by scanning line by line wastes time you don't have.
Read moreHTML Entity Encoder and Decoder for Mac
Rendering user-submitted text safely, or reading a page source full of & and <, both come down to the same tedious conversion problem.
Read moreUnix Timestamp Converter for Mac
A log line reads 1743984000 and you need to know if that was three hours ago or three weeks ago, without doing the math by hand.
Read moreMarkdown Preview for Mac — Paste and See
Writing a README or a pull request description in raw Markdown means guessing how the headers, lists, and code blocks will actually render.
Read moreLorem Ipsum Generator for Mac — Copy Any Length
Filling a design mockup or a test fixture with placeholder text should not require a trip to a website every single time.
Read moreXML Formatter and Validator for Mac
SOAP responses and legacy config files still arrive as unindented XML, and reading it without formatting is harder than it needs to be.
Read moreCron Expression Helper for Mac
Writing a schedule expression by hand and hoping it means what you think it means is how jobs end up running at 3 AM instead of 3 PM.
Read moreYAML to JSON Converter for Mac
Kubernetes manifests, CI pipelines, and config files all speak YAML, but the tooling you actually need to inspect data usually expects JSON.
Read moreText Diff Tool for Mac — Compare Two Texts Side by Side
Two versions of a config file, an email draft, or a paragraph of copy look almost identical, and finding the one word that changed is surprisingly hard by eye.
Read moreNumber Base Converter for Mac — Hex, Binary, Octal, Decimal
Reading a memory address, a color value, or a file permission code means constantly translating between decimal and whatever base the context demands.
Read moreCSV to JSON Converter for Mac
A spreadsheet export needs to become structured data for an API call or a test fixture, and writing a one-off script for it every time is overkill.
Read moreMac Developer Tools That Work Without Internet
Working on a flight, in a basement server room, or just on flaky coffee-shop Wi-Fi shouldn't mean losing access to the utilities you use constantly.
Read moreClipboard Formatter for Mac — Auto-Detect and Suggest Tools
Deciding which formatter, decoder, or converter to reach for is itself a small decision you make dozens of times a day without noticing the overhead.
Read moreString Escape and Unescape for Mac — JSON, HTML, URL
Embedding one string format inside another means escaping quotes, slashes, and special characters correctly, or watching your parser choke.
Read moreMac Developer Utility in the Menu Bar — Quick Access to 41 Tools
The Dock is for apps you look at. The menu bar is for tools you use and dismiss in seconds — and most developer utilities belong in the second category.
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