Particle Dev 1.19 for Mac is available as a free download on our application library. The most recent installer that can be downloaded is 206.5 MB in size. This Mac download was checked by our built-in antivirus and was rated as virus free. Particle Dev for Mac is included in Security Tools. The actual developer of this free Mac application is Particle.
From the developer:
Particle Dev is a professional IDE for Particle based on Github's Atom project. This app allows you to work with local copies of your firmware files. The transport layer between Particle devices and the Particle Cloud is composed of CoAP packets sent over a TCP socket encrypted through an RSA asymmetric key handshake passed off to an AES encrypted tunnel.
You may want to check out more software for Mac, such as Particle Playground, Course For Motion 5 104 - Effects, Particles and Replicators or pArticles, which might be similar to Particle Dev.