Difference bettween substrate-airgapped and subtxt ?

[lucgerrits]

What's the main difference bettween this repo substrate-airgapped and subtxt ?

[emostov]

This repo is not actively maintained and never was production ready. On the other hand subxt is actively being built out and will likely have a commitment to long term maintenance (@dvdplm could likely confirm if the latter is true).

substrate-airgapped (the below are not necessarily implemented but are goals):

• Suitable for the most high security scenarios, such as signing with an HSM in a airgapped setting.
• no_std support
• Provide the lowest level primitives for substrate transaction building that other libraries and applications would want to use
• Primitives for decoding transactions so they can verified
• Slim dependency tree so its easy to audit, vendoring deps if necessary.

subxt:

I think the original use case was constructing, signing, and submitting transactions, but it appears to be expanding support. I basically think of it as the equivalent to polkadot-js/api, but in rust. It wraps RPC calls, such as transaction submission, event listening, and storage queries, in an easy to use way. If you are writing a rust application or library that will support RPC interaction with a substrate node this is probably a good place to start.