Sandalio Developer Toolbox

What it does

Sandalio Developer Toolbox is a free collection of lightweight tools for developers: JSON and XML viewers, JWT inspector, regex tester, cron explainer, SQL formatter, Markdown previewer, diff checker, text utilities, color tools, SVG converter and SVG generator. It is built for quick daily tasks: open the tool, solve the problem, keep working. No login, no heavy SaaS flow, no nonsense.

• 
  Developer Tool BoxJul 2026 · developertoolbox.tech · ▲1

  Free browser-based utilities for everyday dev tasks

• 
  Dev Toolbox - Developer UtilitiesApr 2026 · ▲3

  CSS, JSON & Regex tools — all in one place, zero installs

• 
  SearchZee Web Tools9d ago · searchzee.com · ▲2

  32 developer & writing tools that run in your browser

• 
  Everyday Dev Tools12d ago · toolsfordev.tools · ▲1

  free developer tools that work offline, in your browser

• 
  QuickDevJun 2026 · quickdev.cc · ▲2

  19 free developer tools — all client-side, no tracking

• 
  DevTabJul 2026 · devtab.in · ▲5

  110+ dev tools. One tab. Zero server calls.

• 
  Dograh▲592

  The open source VAPI alternative

  Dev tools · 25d ago · dograh.com

• 
  Meridian▲530

  Don't let your work go unnoticed. Get promoted!

  Dev tools · 20d ago · meridiona.com

• 
  x1▲516

  Lovable for iPhone apps go from idea to App Store

  Dev tools · 11d ago · x1.new

• 
  The GTM Co-Founder▲402

  Open-source GTM skills for technical founders

  Dev tools · 29d ago · gtmcofounder.com

• 
  Open-Source eInk Bike Computer▲398

  OpenTrailPaper is open-source bike computer firmware for the LilyGO T5S3 4.7" E-Paper PRO. It supports offline maps, GPX routes, FIT recording and Bluetooth sensors.

  Dev tools · 2d ago · opentrailpaper.com

• 
  Nuphos▲380

  The AI-Native DevOps Workspace.

  Dev tools · 24d ago · nuphos.ai

• 
  Brew ▲905

  Like Claude design for email marketing

  AI · May 2026 · brew.new

• 
  Kilo Code for VS Code▲897

  Parallel agents, diff reviewer, and multi-model comparisons

  Dev tools · May 2026 · kilo.ai

• 
  StoreClaw▲805

  Grow your store profits with agents that know how to sell

  AI · May 2026 · storeclaw.ai

• 
  PollyReach▲796

  Give your agent a real number and voice to make calls.

  AI · May 2026 · pollyreach.ai

• NW
  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

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

  Dev tools · May 2026 · github.com