Bitcoin only

Bitcoin only: focused solely on Bitcoin. As opposed to spending time, effort and resources on implementing altcoins.

Some examples of bitcoin only wallet software:

• ABCore
• Armory
• Blockstream Green
• Blue Wallet
• Caravan
• Electrum
• Samourai
• Wasabi

Some examples of bitcoin only hardware:

• Coinkite (even though they had altcoin support at some point, they dropped this)

See bitcoin-only.com for an extensive overview.