Cumulus is available from the physical DVD version of Computer Music Magazine.
It's a granular sampler, run by a sequencer. The sequencer has 8 playable scenes, you can play one scene at a time. Each scene is a location within the sample, plus 12 parameters such as pitch, speed, size and jitter.
I really like the user interface, there's a different color for each scene, and you can easily see how the sequence proceeds through the scenes.
Yes, 1.1.3 is the latest version. There is, however, a newer Mac installer that still uses the same version, but has up to date certificates so you won't get Gatekeeper warnings when installing. If you haven't seen these warnings, then you're up to date. (And if you do, drop me a PM and I'll send you the update.).