There was a download of HubbleDotNet 1.2.1 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. We recommend checking the downloaded files with any free antivirus. The actual developer of the program is HubbleDotNet. The program lies within Office Tools, more precisely Document management.
From the developer:
HubbleDotNet (Hubble.net) is an open-source full-text search database project based on .Net Framework. Full-text search database system different from the tradition relational database system, which allows users to easily search the full text information, but it also provides a database field in the logical query.
You may want to check out more software, such as eXcelatorCTR or Twiddlebit Pocket Plan, which might be similar to HubbleDotNet.