IOTK is currently distributed under the Apache License, Version 2.0. It is not, however, openly distributed by me. Here is the requisite copyright notice applied to IOTK:
Copyright 2008 Michael C. Montero Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
If you are interested in using IOTK, collaborating on a project, getting some advice, or discussing technical implementations or ideas feel free to email me at iotkfw@gmail.com.