What is the name of Discord's alpha testing client?

Discord’s alpha testing client is called Discord Canary.

Canary is the most experimental desktop version of Discord. It receives updates ahead of the regular release, allowing Discord to test features and fixes with users willing to tolerate a higher risk of bugs, crashes, and unfinished behavior. The name follows the software industry’s “canary” convention: an early warning channel that exposes problems before a wider rollout.

Discord maintains multiple testing channels. Stable is the normal public client, while Public Test Build, or PTB, is a less experimental testing version. Canary sits at the unstable end of that sequence. On Android, Discord commonly labels the equivalent channel “Alpha,” although the desktop client is generally known as Canary.

A frequent mistake is choosing Discord PTB because it is also a testing client. PTB is a separate channel, not the alpha client. “Discord Dev” and “Discord Beta” are not the canonical names for Discord’s official desktop testing channels. Canary users should expect rapid changes and should avoid relying on it for critical calls or work.