What is your maker/tinkerer development stack?

That's great news!

I use:

Software

• Espruino IDE (obviously!)
  
• Atom text editor (or gedit/nano for quick things)
  
• Linux (or often Chromebook when developing with Espruino)
  
  

Lower level Software

• I use ssh quite a lot to work with things like Raspberry Pi
  
• Espruino command-line tools (sometimes - especially when using on something like a pi)
  
• Eclipse for more serious C code editing
  
• GCC for compiling C code
  
• GDB with nRF52DK or STMLink for debugging hardware
  
  

Electronics

• Eagle CAD for designing circuits
  
• DirtyPCBs or OSHPark for getting PCBs made (OSHPark is great if you need a handful of small PCBs, DirtyPCBs is better for larger sizes and volumes)
  
  

Hardware

• OpenSCAD for designing 3D models (it's not great, but is ok for what I do usually)
  
• https://i.materialise.com/ for getting 3D print prototypes done
  
  

Graphics

• I also use Inkscape for vector graphics
  
• GIMP for editing photos
  
• ImageMagick for bulk-editing of photos (resize all my 50%, making GIFs, etc)
  
  

Pretty much all the software I use is free - although I pay for Eagle CAD (as a maker doing small stuff it'll be free for you though). It's also multiplatform usually so most software should be available on other platforms

Hope that helps!