ActivSDK 2.2.2 could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. ActivSDK lies within System Utilities, more precisely System Optimization. The most popular versions of the program 2.2 and 2.0.
You can install ActivSDK on Windows XP/Vista/7/8 32-bit. We cannot guarantee that the program is safe to download as it will be downloaded from the developer's website. Before launching the program, check it with any free antivirus software. This free software is a product of Promethean.
From the developer:
The Promethean SDK is a programmer's toolkit which enables you to develop applications that will work seamlessly with a combination of Promethean hardware and software Learner response systems.
Integrate Promethean's K-12 world leading Learner Response Systems directly into your online and off-line applications. ActiVote, ActivExpression and ActivEngage, our computer based Learner Response software, are all supported.
You may want to check out more software, such as ActivSDK Flash Extension, which might be similar to ActivSDK.