| AnalogControlPanel | Faster analog reads and more for your Uno/Nano/Pro Mini. |
| AVRactivePower | Save battery energy by slowing the clock and/or switching off un-needed modules in the microcontroller. |
| DietSerial | An alternative to Serial that saves up to 167 bytes of RAM, for Uno, Nano, Pro Mini, breadboard Arduinos. |
| SendOnlySerial | Lightweight serial output library that saves up to 175 bytes of RAM compared to Arduino's Serial |