Epic Pen - A windows tool for drawing over your desktop and applications
thirdweb - thirdweb is an ecosystem of SDKs, dev tools, and dashboards that help teams build and manage web3 apps. Deploy custom or pre-built contracts to ETH, MATIC, AVAX, & more.
gInk - An on-screen on-screen annotation software for Windows.
SmartContract.com - ChainLink - Connect Smart Contracts to your Applications and Data
Gromit-MPX - Create annotations by directly drawing on your screen.
Cues.sg - Cues is a website that generates code for your own smart contracts and Web 3.0 apps, in a simple 3 step process.