Actual Wi-Fi adapters called "Crossfire".
Actual Wi-Fi adapters called "Crossfire".
Recently, I discovered a Windows application named "Speedify," developed by Connectify. It functions as a VPN that merges two Wi-Fi, Ethernet, or Bluetooth connections. This capability is limited to scenarios where internet speeds are restricted per connection. I’m familiar with this tool through an article stating that "Dispatch" can unite multiple internet links. However, Connectify no longer offers licenses for "Dispatch." Instead, "Speedify" now provides this feature. It can only link two internet connections. Intriguing developments! I visited "Taobao.com" to look for "Dispatch" licenses. Only one vendor remains selling it. I purchased it for around $12 and tested the "Dispatch." It performs well. Connectify hides "Dispatch" within the "Speedify" package. Both applications can merge internet links, but "Speedify" is a VPN that may slow down website loading times. The "Dispatch" license appears to be the sole purchase option on Taobao.
This also functions correctly only when the system supports distinct speeds for each device (by MAC address) rather than varying by login account. Alternatively, if operating under login accounts, you must assign each connection to a unique account.
This approach has certain constraints. Its effectiveness relies on the functioning of the local internet infrastructure. It remains useful as long as those conditions are met.
So often operating systems can handle this themselves without additional programs. It's referred to as Trunking, Etherchannel, Bonding or NIC Teaming based on the OS. The idea is creating a virtual interface that uses the same physical address for two connections, with routing mechanisms in place. For Wi-Fi in AP mode this seems unlikely because of constraints in 802.11. A proxy likely remains the best option for Wi-Fi.