If you like using Python, try the Cardano-Tools library that I put together. Its basically a smart wrapper around the CLI that takes care of extra steps for you (like selecting a UTxO) so you need the cardano-cli installed and a synced cardano-node running. Below is some example code.

from cardano_tools import ShelleyTools

# Test Inputs (example paths)
path_to_cli = "/home/user/.cabal/bin/cardano-cli"
path_to_socket = "/home/user/relay-node/db/node.socket"
working_dir = "/home/user/.cardano-tools/"

# Create a ShelleyTools object
shelley = ShelleyTools(
    path_to_cli, 
    path_to_socket, 
    working_dir, 
    network="--mainnet"  # Can also use testnet magic here
 )

 amt = 10 # Ada to send
 to_addr = "addr1..." # Address to send the ADA to
 from_addr = "addr1..." # Address to send the ADA from
 key_file = "/path/to/addr.skey" # path to the signing key file

 shelley.send_payment(amt, to_addr, from_addr, key_file)

Note that you need the signing key file that belongs to the specific address that you are sending the ADA from.

If you like using Python, try the Cardano-Tools library that I put together. Its basically a smart wrapper around the CLI that takes care of extra steps for you such as selecting the UTxO(s). You need the cardano-cli installed and a synced cardano-node running. Below is some example code.

from cardano_tools import ShelleyTools

# Test Inputs (example paths)
path_to_cli = "/home/user/.cabal/bin/cardano-cli"
path_to_socket = "/home/user/relay-node/db/node.socket"
working_dir = "/home/user/.cardano-tools/"

# Create a ShelleyTools object
shelley = ShelleyTools(
    path_to_cli, 
    path_to_socket, 
    working_dir, 
    network="--mainnet"  # Can also use testnet magic here
 )

 amt = 10 # Ada to send
 to_addr = "addr1..." # Address to send the ADA to
 from_addr = "addr1..." # Address to send the ADA from
 key_file = "/path/to/addr.skey" # path to the signing key file

 shelley.send_payment(amt, to_addr, from_addr, key_file)

Note that you need the signing key file that belongs to the specific address that you are sending the ADA from.