Developer Tools Pro

What it does

100+ offline developer tools in one app. JSON converters, encoders, cryptography, formatters, code generators and more. Available on macOS, Windows and iPadOS.

120+ offline developer tools in one app. JSON converters, encoders, cryptography, formatters, code generators and more. Available on macOS, Windows and iPadOS.

Format JSON, decode tokens, test regex, compare text, hash strings, and convert data locally, without accounts or tracking. Hit ⌘K (or Ctrl+K on Windows) to instantly search and launch any of the 120+ tools without lifting your hands from the keyboard. From parsing to cryptography; if you do it regularly, it's already here. Transform between JSON, CSV, YAML, XML, TOML, and more losslessly. Generate typed models and HTTP clients from JSON and cURL commands. Encode and decode Base64, URLs, JWTs, HTML entities, and more. Generate hashes and encrypt/decrypt data with AES, all locally on your device. Convert timestamps, calculate age/date differences and check global times. Generate UUIDs, test…from devtpro.app

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  Tooly2024 · gettooly.app · ▲12

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  DevKit2025 · ▲13

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  DevKitHub2025 · devkithub.com · ▲8

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  Bit Tools2025 · ▲14

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  Tools Take2025 · ▲8

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  /dev/null▲481

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  Whiteboard (YC W26) – an open-source IDE for thoughtful software design▲423

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  Dev tools · 27d ago · github.com

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  Dev tools · 25d ago · github.com

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  OpenBot▲362

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  Dev tools · 22d ago · openbot.run

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  Talanoa▲341

  Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…

  Dev tools · 20d ago · talanoa.email

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  Needle: We Distilled Gemini Tool Calling into a 26M Model▲776

  Hey HN, Henry here from Cactus. We open-sourced Needle, a 26M parameter function-calling (tool use) model. It runs at 6000 tok/s prefill and 1200 tok/s decode on consumer devices. We were always frustrated by the little effort made towards building agentic models that run on budget phones, so we conducted investigations that led to an observation: agentic experiences are built upon tool calling, and massive models are overkill for it. Tool calling is fundamentally retrieval-and-assembly (match query to tool name, extract argument values, emit JSON), not reasoning. Cross-attention…

  Life & fun · May 2026 · github.com

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  Files.md – Open-source alternative to Obsidian▲730

  🌱 Private, quiet space for thinking. Simple app for .md files. - zakirullin/files.md

  Dev tools · May 2026 · github.com