Most free G-code senders are "portable" applications. This means you don't necessarily "install" them; you simply download the .zip file, extract it, and run the .exe or .jar file. Always make sure you have the correct installed so your computer can recognize the USB connection to your CNC controller.
Heightmap generation. It can probe the surface of your material to account for slight PCB or wood warping, ensuring a consistent cut depth. Download: [GitHub - Denvi/Candle] 3. gCP (gCodeSender) g code sender free download
Minimalist usersFor those who want zero distractions, gCP is a simple, straightforward utility. It doesn't have the flashy 3D previews of UGS, but it is rock-solid for sending files via a serial port. Why it’s great: Simple setup and very low latency. Most free G-code senders are "portable" applications
While most are cross-platform, some (like Candle) are more optimized for Windows. Heightmap generation
Desktop CNCs (like the 3018 Pro)If you own a small hobbyist CNC mill, Candle is likely the software that came recommended in the manual. It is specifically designed for boards running GRBL firmware.
Advanced users and Raspberry Pi setupsCNCjs is a browser-based interface. While you can run it on a standard PC, it shines when installed on a Raspberry Pi connected to your CNC. This allows you to control your machine wirelessly from any laptop or tablet in the house.
It is incredibly lightweight. If you are using an older laptop in your workshop, Candle will run smoothly without hogging resources.