ArrayCat

What it does

ArrayCat is a free tool for converting a list of data into an array. For example, you can convert CSV file into PHP array. Or, into a JavaScript array. Or even into an SQL insertion thingie, which is technically not an array.

• AA
  Array – A Better Python List2021 · github.com · ▲87
• 
  Array Builder2022 · ▲171

  A free tool to visualize the output of array operations

• 
  ArrayList2022 · ▲74

  A Super Simple Cloud List DB ( No-login & Free )

• 
  Sqlify2017 · ▲191

  JSON, CSV and SQL converter

• CL
  Convert Large CSV/XLSX to JSON or XML in Browser2025 · csvforge.com · ▲41

  Hello HN, I'm excited to share a project I've been working on: A simple, fast way to process huge CSV and XLSX files directly in your browser and export them as clean JSON or XML Here's a few things that makes this converter different: - runs in the browser - all parsing and conversion is client side can handle data any size data - automatically detects delimiters, encodings, and data types as it parses - Live preview with column renaming, search/replace, and data cleanup - Export to JSON or XML — clean, structured output that can be used for API or Databases backstory: I built this…

• 
  jsontablesOct 2025 · jsontables.com · ▲6

  Json to table & excel converter online

• 
  Meridian▲530

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

  Dev tools · 26d ago · meridiona.com

• 
  x1▲516

  Lovable for iPhone apps go from idea to App Store

  Dev tools · 17d ago · x1.new

• 
  Open-Source eInk Bike Computer▲421

  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 · 8d ago · opentrailpaper.com

• 
  Toplify▲365

  Track your App Store ranking worldwide

  Dev tools · 21d ago · toplify.app

• 
  Vendo ▲362

  Let your users build their own features inside your product

  Dev tools · 26d ago · vendo.run

• 
  PR Lens by Coldtea.ai▲342

  See code through a new lens

  Dev tools · 15d ago · prlens.dev

• NA
  New AI edits images based on text instructions▲1,098

  This works suprisingly well. Just give it instructions like "make it winter" or "remove the cars" and the photo is altered. Here are some examples of transformations it can make: Golden gate bridge: https://raw.githubusercontent.com/brycedrennan/imaginAIry/ma... Girl with a pearl earring: https://raw.githubusercontent.com/brycedrennan/imaginAIry/ma... I integrated this new InstructPix2Pix model into imaginAIry (python library) so it's easy to use for python developers.

  AI · 2023 · github.com

• 
  HyperSwitch▲715

  Fast, reliable, and affordable open source payments switch

  Dev tools · 2023 · hyperswitch.io

• IV
  I've built a C# IDE, Runtime, and AppStore inside Excel▲670

  The project is called QueryStorm. It uses Roslyn to offer C# (and VB.NET) support in Excel, as an alternative to VBA. I've posted about it before, but a lot has changed since then so figured I'd share an update. The current version includes a host of new features, namely a C# debugger, support for NuGet packages, and the ability to publish Excel extensions to an "AppStore" (which is essentially a NuGet repository). The AppStore can be used by anyone with the (free) runtime component. Another great addition is the community license, which is a free license for individuals and small companies…

  Work · 2023 · querystorm.com

• IM
  I'm a doctor and made a responsive breathing app for stress and anxiety▲666

  Hey HN! Some more info: I’m an NHS doctor and the founder of Pi-A (https://www.pi-a.io) which developed Lungy (https://www.lungy.app). Lungy is an app (iOS only for now) that responds to breathing in real-time and was designed to make breathing exercises more engaging and beneficial to do. It hopefully has many aspects of interest to the HN community – real-time fluid, cloth and soft body sims running on the phone’s GPU. My background is as a junior surgical trainee and I started building Lungy in 2020 during the first COVID lockdown in London. During COVID, there were…

  Life & fun · 2023 · lungy.app

• 
  Product Hunt Rewind 2022▲620

  Your 2022 on Product Hunt

  Life & fun · 2023

• 
  LaunchPedia▲617

  200+ handpicked tools to skyrocket your product launch

  Growth · 2023