Download of SpeckCode 1.0.15 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The actual developer of this free software for Mac is Vakoc Woodworks, LLC. The application lies within Developer Tools, more precisely Webmaster Tools.
From the developer:
SpeckCode is the IDE for IoT. SpeckCode provides an integrated development environment (IDE) for crafting great applications for the Particle platform. You have the chance to develop your Photon-, Electron-, or Pi-based applications in a modern development environment using all the advantages of a macOS based application.
You may want to check out more software for Mac, such as solr, joomla- or HtmlTidy, which might be similar to SpeckCode.