Well I'm glad you're looking to supporting multiple platforms and I'll certainly purchase if Guilded support is added, since it's bar far the closest to Discord in functionality and community.
Viewing post in What other platforms are you expecting to target?
Looks like I’ll be waiting another 2 years… At the very least Guilded opened their API to the public, so there’s some progress.
https://www.guilded.gg/API-Official/blog/Announcements/Introducing-the-Guilded-API