Yea seems like a close competitor to Pushover. We used to use Pushover which is what actually pushed us to build HookFeed. Sometimes you need more context than a simple alert...and many times a developer isn't available to build out these tools.
HookFeed doesn't integrate with *any* app but we want to do one damn well...make the alerts incredibly functional and valuable...and then consider other apps :-)
This looks sweet for other kinds of notifications tho!
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