Life & fun · alternatives · 2026

24 alternatives to NodeLoop

Building a free web toolbox for hardware engineers: harness cable diagram generator, connector pinout tools (M.2, JTAG...), microcontroller serial monitor, and various other small utilities. Updated with a lot of various tools designed to easy life of ee engineers. No sign-up required. Designed from my own needs. Feedback and feature suggestions are welcome :)

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1
Wireflow▲352
Create beautiful flowcharts
2017 · wireflow.co · its alternatives →
2
How To Build This▲144
A platform for makers to find the right tools
2017 · its alternatives →
3
SnapEDA Plugins▲80
A turbo boost for circuit board design
2016 · snapeda.com · its alternatives →
4
Circuito.io▲147
Instant code and wiring for your project
2017 · circuito.io · its alternatives →
5
Bytebeam▲134
Build ESP32-based IoT projects 10X faster
2022 · bytebeam.io · its alternatives →
6
Codebender▲123
Development platform for Arduino users, makers and engineers
2014 · codebender.cc · its alternatives →
7
O'Reilly Hardware - Peter Hoddie on JavaScript for embedded computers▲54
You don't need to write C or Assembly to create electronics
2016 · oreilly.com · its alternatives →
8
HyperDev▲181
A new rapid prototyping tool from Fog Creek
2016 · hyperdev.com · its alternatives →
9
Creation Crate▲135
Get a new electronics project every month
2016 · creationcrate.com · its alternatives →
10
MockFlow WireframePro 2.0▲164
Super-easy wireframing
2017 · mockflow.com · its alternatives →
11
PowerMockup▲190
Mockup & Wireframe toolkit for PowerPoint
2015 · powermockup.com · its alternatives →
12
Atomic Free▲190
Learn to prototype for free
2017 · atomic.io · its alternatives →
13
Wireframing: The Hands-On Guide▲141
Free step-by-step guide. Read online, or save for later.
2016 · uxpin.com · its alternatives →
14
CircuitHub▲63
AWS for hardware startups and makers.
2014 · circuithub.com · its alternatives →
15
LittleBits - the bitLab▲84
The Marketplace For User-Generated Hardware
2014 · edu.sphero.com · its alternatives →
16
Keynotopia▲150
Prototyping straight into Keynote or Powerpoint
2015 · keynotopia.com · its alternatives →
17
Scratchboard▲146
Create, simulate, and collaborate on digital circuits
2025 · scratchboard.io · its alternatives →
18
Splice – CAD for Cable Harnesses and Electrical Assemblies▲89
I first posted Splice CAD as an in-browser tool for making cable harnesses. Since then it’s grown in both features and scope — the direction is moving from “harness-only” toward a lightweight CAD for wiring and electrical assemblies. New functionality includes: Editing Enhancements - Full undo/redo to easily restore editor state - Multi-select & group actions to move, delete, and add components - Bulk connect tool to create straight-through, crossover, or custom wiring patterns quickly - Multiple connections per pin allow for daisy chains, etc. Documentation Additions - Multi-page PDF…
2025 · splice-cad.com · its alternatives →
19
hardware_directory▲122
All the resources you need to build your Hardware startup
2015 · its alternatives →
20
SparkFun▲77
Bits and Pieces to Make Electronics Projects Possible
2014 · sparkfun.com · its alternatives →
21
Experimental Platform▲90
Easily build smart-device integrations with web technologies
2016 · experimental-platform.github.io · its alternatives →
22
eGranary Pocket Library▲60
A library on a chip: knowledge for those w/o internet access
2015 · indiegogo.com · its alternatives →
23
Flinto▲52
Super easy tool for prototyping
2014 · flinto.com · its alternatives →
24
circuits.io▲74
Learn electronics and easily create circuit boards online
2014 · library.io · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →